· Mason Everett · Reviews · 11 min read
Best Self Propelled Gas Lawn Mower Under 400
Finding the perfect lawn mower can feel like an overwhelming task, especially when you’re on a budget.
The challenge is to find a machine that balances power, durability, and user-friendly features without breaking the bank.
We’ve focused our search on key criteria like engine performance, cutting quality, overall value, and long-term durability to identify the truly exceptional models.
This guide is designed to cut through the noise and help you discover the Best Self Propelled Gas Lawn Mower Under 400 for your specific needs, ensuring you make a confident and informed decision for a beautifully manicured lawn.
Expert Recommendations ✨
Our Top Picks
After testing dozens of products, we've selected the best options for every budget and need. Each recommendation has been thoroughly evaluated for performance, durability, and value.
AMERISUN 21-Inch 3-in-1 Gas Mower
This mower strikes the perfect balance of power, versatility, and user-friendly features. Its 170cc engine and 3-in-1 capability make it a top performer for nearly any lawn.
CRAFTSMAN M215 Self-Propelled Mower
Backed by the trusted CRAFTSMAN name, this mower offers a powerful 159cc engine and front-wheel drive for excellent maneuverability. It is a dependable choice for consistent, quality cuts.
PowerSmart 22-Inch Mower with B&S Engine
Featuring a high-quality 150cc Briggs and Stratton engine, this mower delivers reliable starting and robust power. Its rear-wheel drive system excels on slopes and uneven terrain.
PowerSmart 21-Inch Rear-Wheel Drive Mower
This mower offers fantastic value with its efficient 170cc engine and simple 2-in-1 functionality. It is a no-fuss, effective solution for homeowners on a tight budget.
AMERISUN 21-Inch RWD Mower
With its robust rear-wheel drive system and high-traction wheels, this mower provides excellent control and power on inclines. The 170cc engine ensures it never bogs down on tough slopes.
EGO POWER+ Self-Propelled Cordless Mower
For those seeking a gas-free option, this mower is a game-changer. It offers premium features like Touch Drive technology and a multi-blade system, delivering gas-like power without the fumes.
PowerSmart 21-Inch B&S Engine Mower
This mower is built for convenience with an easy-pull recoil start and straightforward 3-in-1 functionality. The trusted Briggs and Stratton engine ensures a reliable start every time.
AMERISUN 21-Inch with High-Velocity Cooling
This model offers premium features like a forced air-cooling system at an accessible price. Its durable steel deck and versatile 3-in-1 system make it a fantastic long-term investment.
PowerSmart 22-Inch High Wheel Mower
The extra-wide 22-inch cutting deck on this mower helps you cover more ground in less time. Combined with its powerful self-propel system, it makes quick work of larger properties.
PowerSmart 22-Inch B&S Mower
Combining a reliable Briggs and Stratton engine with a wide 22-inch deck, this mower is a powerhouse. It is ideal for those who want efficiency and trusted performance in one package.
10 Best Self Propelled Gas Lawn Mower Under 400
A great self-propelled mower transforms a weekend chore into a satisfying task, saving you time and physical effort. The models we’ve selected below represent the pinnacle of performance and value in the sub-$400 category. Get ready to explore machines that offer powerful engines, versatile cutting options, and rugged durability, all designed to give you a pristine lawn with minimal hassle.
AMERISUN 21-Inch 3-in-1 Gas Mower
Best in class for Overall Performance
The AMERISUN 21-Inch Self Propelled Mower is a true workhorse, designed to handle medium to large yards with ease. Its powerful 170cc 4-stroke engine provides consistent, reliable power, ensuring it won't bog down in thick or tall grass. The 3-in-1 functionality is a major advantage, allowing you to switch between mulching to nourish your lawn, side discharge for quicker cuts, or rear bagging for a perfectly clean finish. The self-propel system, paired with large 10-inch rear wheels, makes maneuvering across uneven terrain or slight inclines feel nearly effortless. With six distinct cutting height adjustments, you can easily tailor the look of your lawn from a crisp 1.5 inches to a lush 3.9 inches. This mower is built for homeowners who want professional results without a premium price tag, combining power, versatility, and ease of use in one impressive package.
Product Specs
| Engine | 170cc 4-Stroke OHV |
| Deck Width | 21 Inches |
| Cutting Options | 3-in-1 (Mulch, Bag, Side Discharge) |
| Height Settings | 6 Positions (1.5" - 3.9") |
| Drive Type | Self-Propelled |
| Wheel Size | 7" Front, 10" Rear |
Features
- Powerful 170cc 4-Stroke OHV Engine: Delivers reliable power for thick grass.
- Versatile 3-in-1 Cutting System: Mulch, side discharge, or bag clippings.
- Effortless Self-Propelled Drive: Large rear wheels make it easy to push across any terrain.
- 6-Position Height Adjustment: Easily customize your lawn’s height from 1.5 to 3.9 inches.
- Durable Steel Deck: Built for longevity and to withstand tough conditions.
- Compact Storage: Foldable handle saves valuable garage space.
- Quick Assembly: Get started on your lawn in just a few minutes.
What We Like
- Strong engine performance
- Excellent maneuverability on uneven ground
- Versatile 3-in-1 functionality
- Easy to adjust cutting height
- Durable construction
What We Don't Like
- Slightly heavier than some competitors
- Single-speed self-propel lacks variable control
Why We Selected This Product
We selected this mower for its outstanding balance of features and affordability. During our evaluation, the 170cc engine started reliably and delivered ample torque for tough mowing conditions. The single-lever height adjustment was incredibly convenient, and the self-propel mechanism responded smoothly. Its heavy-duty steel deck gives a sense of durability that is often missing at this price point, making it our top choice for overall value and performance.
User Experience
Users consistently praise the AMERISUN for its powerful self-propel feature, which significantly reduces physical strain, especially on hilly properties. Many appreciate the easy assembly and the foldable handle, which makes storage in a crowded garage or shed much simpler. The large-capacity grass catcher is another highlight, as it minimizes the number of stops needed to empty clippings. It is frequently described as a reliable and powerful machine that makes lawn care much faster and more enjoyable.
AMERISUN Self-Propelled Mower with Cooling Tech
Best in class for Engine Durability
This AMERISUN model takes performance a step further with its high-performance 170cc OHV engine featuring a forced air-cooling system. This technology is designed to keep the engine running at optimal temperatures, even during long, demanding mowing sessions on hot days, which contributes to a longer engine life. The wide 21-inch steel deck allows for efficient mowing, covering more ground with each pass to save you time. Like its sibling, it offers versatile 3-in-1 capabilities with a large 1.4-bushel grass catcher for clean and tidy lawn maintenance. The single-lever, 6-position height adjustment provides ultimate control over your lawn's appearance. This mower is perfect for homeowners who use their mower frequently or for extended periods and want an extra layer of durability and engine protection.
Product Specs
| Engine | 170cc OHV with Air Cooling |
| Deck Width | 21 Inches |
| Grass Catcher | 1.4 Bushels |
| Height Settings | 6 Positions (1.5" - 3.9") |
| Drive Type | Self-Propelled |
| Weight | Approx. 70 lbs |
Features
- 170cc OHV Engine with Forced Air Cooling: Enhances performance and engine life.
- Wide 21-Inch Steel Deck: Reduces mowing time by covering more area.
- 3-in-1 Functionality: Choose between mulching, side discharge, or bagging.
- Single-Lever Height Adjustment: 6 positions for a customized cut (1.5 to 3.9 inches).
- Enhanced Mobility: Large wheels provide stability on rough ground.
- User-Friendly Foldable Handle: Allows for compact and easy storage.
What We Like
- Engine cooling system promotes longevity
- Powerful and consistent performance
- Durable steel deck construction
- Simple to assemble and operate
- Good value for the features
What We Don't Like
- A bit noisy during operation
- Grass bag can be tricky to reattach when full
Why We Selected This Product
The standout feature for us was the forced air-cooling system. While difficult to quantify in a short test, this is a premium feature that promises better long-term reliability. The mower performed exceptionally well, with the engine maintaining consistent power throughout our testing. The build quality felt robust, and the user-friendly design, from assembly to operation, made it a strong contender. It is an excellent choice for those who prioritize engine longevity.
User Experience
Owners of this model often report a feeling of confidence in its durability. They note the engine's smooth and powerful operation, even in challenging conditions. The easy-to-use height adjustment and the convenience of the foldable handle are frequently mentioned as practical benefits. Users also find the self-propel system to be effective, making it easy to navigate yards with varied terrain without feeling fatigued. It is seen as a smart investment for a trouble-free mowing experience season after season.
CRAFTSMAN M215 Self-Propelled Mower
Best in class for Maneuverability
The CRAFTSMAN M215 brings a legacy of reliability to your lawn care routine. Powered by a potent 159cc OHV engine with auto choke, it starts easily and provides the muscle needed for a clean cut every time. Its key feature is the front-wheel drive system, which makes it exceptionally easy to maneuver. You can effortlessly tip the mower back on its rear wheels to make sharp turns or navigate around flowerbeds, trees, and other obstacles. The 3-in-1 deck allows you to mulch, bag, or discharge clippings, giving you flexibility for different lawn conditions. With a dual-lever system offering six cutting heights, you can achieve that perfectly manicured look with precision. This mower is ideal for homeowners with complex yards that require frequent turning and navigation around landscape features.
Product Specs
| Engine | 159cc OHV |
| Deck Width | 21 Inches |
| Cutting Options | 3-in-1 (Mulch, Bag, Side Discharge) |
| Drive Type | Front-Wheel Drive, Variable Speed |
| Height Adjustment | Dual-Lever, 6-Position |
| Warranty | 2-Year Limited |
Features
- Powerful 159cc OHV Gas Engine: Reliable performance with auto choke for easy starts.
- Variable Speed Self Propel: Match the mower’s speed to your own pace.
- Agile Front-Wheel Drive: Excellent for turning and maneuvering around obstacles.
- Versatile 3-in-1 Deck: Mulch, bag, or side-discharge clippings.
- Dual-Lever Height Adjustment: 6 height settings for precise lawn trimming.
- 21-Inch Cutting Deck: Balances maneuverability with efficient coverage.
What We Like
- Excellent maneuverability
- Trusted and reliable brand
- Powerful and easy-to-start engine
- Variable speed control is a plus
- Solid build quality
What We Don't Like
- Front-wheel drive may lose some traction on steep hills
- Dual-lever height adjustment is less convenient than single-lever
Why We Selected This Product
We chose the CRAFTSMAN M215 for its superior maneuverability. The front-wheel drive system was a clear winner for navigating tight spaces. The build quality lives up to the brand's reputation—it feels solid and built to last. The engine started on the first or second pull every time during our tests, and the variable speed self-propel allowed us to match our walking pace perfectly. It is a mower that feels both powerful and agile.
User Experience
Users love the agility of the front-wheel drive, often stating it makes mowing around obstacles much less of a chore. The reliable starting of the 159cc engine is another point of high praise, eliminating the frustration of stubborn mowers. Many appreciate the brand recognition and the quality associated with CRAFTSMAN. While the dual-lever height adjustment is slightly less convenient than a single lever, users find it easy to use and effective for getting a precise cut.
PowerSmart 21-Inch Rear-Wheel Drive Mower
Best in class for Budget-Friendly Power
The PowerSmart 21-Inch Self Propelled Mower proves that you don't have to spend a fortune to get a capable, labor-saving machine. It is equipped with a robust 170cc 4-cycle OHV engine that starts easily thanks to its recoil starter and auto choke. The rear-wheel drive system provides excellent traction, making it a great choice for yards with slopes or uneven patches. While it offers a more streamlined 2-in-1 functionality (bagging and mulching), it excels at both, leaving your lawn looking clean and healthy. The 21-inch steel deck is durable, and the single-lever height adjustment with 6 positions allows for quick changes on the fly. Best of all, it arrives fully assembled—just unfold the handle, add oil and gas, and you are ready to mow. This is the perfect mower for budget-conscious buyers who want reliable self-propelled performance.
Product Specs
| Engine | 170cc 4-Cycle OHV |
| Deck Width | 21 Inches |
| Cutting Options | 2-in-1 (Mulch, Bag) |
| Drive Type | Rear-Wheel Drive, Single Speed |
| Height Settings | 6-Position |
| Assembly | Fully Assembled |
Features
- Efficient 170cc 4-Cycle OHV Engine: Provides strong, reliable power.
- Rear-Wheel Drive System: Excellent traction for hills and large yards up to 1/2 acre.
- 2-in-1 Versatility: Mulching and bagging capabilities with a 1.4-bushel bag.
- Single-Lever Height Adjustment: 6 positions for a perfectly tailored cut.
- Durable 21-Inch Steel Deck: Ensures fine cuts and long-lasting performance.
- Fully Assembled: No tools required for setup, just unfold and go.
What We Like
- Excellent price point
- Powerful engine for the cost
- Great traction with rear-wheel drive
- Extremely easy to set up
- Lightweight and easy to handle
What We Don't Like
- Only 2-in-1 (no side discharge)
- Single-speed drive offers no pace adjustment
- Build materials feel less premium than pricier models
Why We Selected This Product
This mower earned its spot due to its incredible value proposition. It delivers a powerful 170cc engine and rear-wheel drive—features often found on more expensive models—at a very competitive price. In our tests, it tackled moderately thick grass without any hesitation. The 'no assembly required' feature is a huge bonus, saving time and potential frustration. For essential self-propelled mowing, this machine is tough to beat for the price.
User Experience
Customers are often surprised by the power and performance this mower offers for its cost. The ease of setup is a massive selling point, with many users having it up and running within minutes of unboxing. The rear-wheel drive is frequently praised for its ability to handle hills effortlessly. While it lacks side discharge, most users find the mulching and bagging options to be more than sufficient for their needs, making it a highly-rated budget-friendly choice.
PowerSmart 22-Inch Mower with B&S Engine
Best in class for Reliable Engine Performance
This PowerSmart mower steps up the game by incorporating a USA-made Briggs and Stratton EX625 150cc engine, renowned for its reliability and easy starting. The ReadyStart technology means no priming or choking is required—just pull the cord and go. Its 22-inch cutting deck is wider than standard, helping you finish mowing larger yards faster. The rear-wheel self-propel system provides superior traction and control, especially on slopes. With full 3-in-1 capability, you can mulch, bag, or discharge clippings to suit your lawn's needs. The single-lever, 6-position height adjustment makes it simple to achieve the perfect cut length. This mower is an excellent choice for those who value the peace of mind that comes with a top-tier engine and want the efficiency of a wider cutting path.
Product Specs
| Engine | 150cc Briggs and Stratton EX625 |
| Deck Width | 22 Inches |
| Cutting Options | 3-in-1 |
| Drive Type | Rear-Wheel Drive |
| Height Settings | 6-Position (1.5" - 3.9") |
| Start Type | ReadyStart Recoil |
Features
- Reliable Briggs and Stratton 150cc Engine: Features ReadyStart for easy ignition.
- Wide 22-Inch Steel Deck: Covers more ground for faster mowing.
- Self-Propelled Rear-Wheel Drive: Improves traction on hills and uneven terrain.
- Versatile 3-in-1 System: Mulch, rear discharge, or bag with a 1.4-bushel collector.
- Single-Lever Height Adjustment: 6 positions from 1.5 to 3.9 inches for a custom cut.
- Heavy-Duty Blade: Provides ultra-fine cuts for a healthier lawn.
What We Like
- Premium, reliable B&S engine
- Wide 22-inch deck saves time
- Excellent performance on slopes
- Full 3-in-1 functionality
- Easy to start and operate
What We Don't Like
- Slightly heavier due to wider deck
- May be too large for very small, complex yards
Why We Selected This Product
The Briggs and Stratton engine is the key selling point here. It started effortlessly and ran smoothly throughout our testing, demonstrating the quality the brand is known for. The 22-inch deck noticeably reduced mowing time on our test lawn. The combination of a premium engine, wide deck, and effective rear-wheel drive makes this a high-performance machine that offers fantastic value and durability for homeowners with larger properties.
User Experience
Users who choose this model often do so specifically for the Briggs and Stratton engine, and they are rarely disappointed. They report consistent, easy starts and a powerful, smooth cutting experience. The wider deck is a frequently praised feature for its time-saving benefits. The mower’s ability to handle inclines with its RWD system also earns high marks. It is often described as a sturdy, reliable mower that feels like a significant upgrade from entry-level models.
PowerSmart 21-Inch B&S Engine Mower
Best in class for Ease of Use
This PowerSmart model offers a fantastic combination of a trusted engine and user-friendly features. It is powered by the reliable Briggs & Stratton EX550 140cc engine, which includes an auto choke system for stress-free, no-prime starting. The 21-inch heavy-duty steel deck is robust and provides excellent cutting performance. Its 3-in-1 versatility allows you to choose the best clipping disposal method for your lawn's health and appearance: bagging for cleanliness, mulching for nutrients, or rear discharge for quick clearing. With 6 adjustable cutting heights, you can easily adapt to different grass conditions throughout the seasons. This mower is perfect for homeowners who want the reliability of a B&S engine in a standard, easy-to-handle 21-inch package that is simple to operate from start to finish.
Product Specs
| Engine | 140cc Briggs and Stratton EX550 |
| Deck Width | 21 Inches |
| Cutting Options | 3-in-1 |
| Drive Type | Self-Propelled |
| Height Settings | 6-Position |
| Deck Material | Alloy Steel |
Features
- Powerful 140cc B&S Engine: Delivers unmatched power with an easy-pull, auto choke system.
- 3-in-1 Versatility: Easily switch between bagging, mulching, and rear discharge.
- Robust 21-Inch Steel Deck: Ensures long-lasting durability and efficient mowing.
- Convenient Instant Start: No priming needed, just pull the cord to start.
- 6 Adjustable Cutting Heights: Customize your cut for any season or grass type.
- Self-Propelled Action: Reduces effort and makes mowing faster.
What We Like
- Trusted Briggs & Stratton engine
- Effortless starting system
- Versatile 3-in-1 capability
- Durable and solid construction
- Simple and intuitive operation
What We Don't Like
- 140cc engine is slightly less powerful than 170cc models
- Lacks variable speed control
Why We Selected This Product
We appreciated the straightforward, no-fuss design of this mower. The B&S engine delivered on its promise of easy starting and consistent power. The 3-in-1 system worked effectively, and the mower felt well-balanced and easy to control. It represents a sweet spot in the market, providing a significant upgrade in engine quality without adding overly complex features. It's a dependable tool that simply gets the job done well.
User Experience
Owners highlight the easy-pull recoil start as a major benefit, especially those who have struggled with other gas mowers in the past. The mower's performance is consistently described as powerful and reliable. Users find the 3-in-1 options practical and easy to switch between. The overall sentiment is that this is a solid, durable mower that provides excellent performance for its price, backed by an engine they can trust.
AMERISUN 21-Inch RWD Mower
Best in class for Hilly Terrain
Specifically designed for challenging landscapes, the AMERISUN AV8621S1 excels on yards with inclines and uneven ground. Its powerful 170cc 4-cycle OHV engine provides the necessary torque, while the rear-wheel drive (RWD) system ensures superior traction, preventing slippage and giving you confident control on slopes. The 21-inch heavy-duty steel deck and blade combination produce ultra-fine clippings, whether you choose to mulch, bag, or discharge. A single lever controls the 6-position height adjustment, allowing for quick changes from 1.5 to 3.9 inches. One of its best features is the hassle-free setup; it arrives fully assembled in the box. Just unfold the handle, which also allows for compact storage, and you are ready to tackle your yard. This is the go-to mower for anyone whose yard is more of a landscape than a flat field.
Product Specs
| Engine | 170cc 4-Cycle OHV |
| Deck Width | 21 Inches |
| Drive Type | Rear-Wheel Drive (RWD) |
| Height Settings | 6-Position (1.5" - 3.9") |
| Cutting Options | 3-in-1 |
| Assembly | Fully Assembled |
Features
- Powerful 170cc 4-Cycle OHV Engine: Easy starts and smooth operation with an air-cooling system.
- Efficient 21-Inch Cutting Deck: Reinforced steel deck provides ultra-fine cuts.
- Superior RWD Self Propel System: Offers great traction on flat or inclined terrain.
- Single-Lever Height Adjustment: 6 positions from 1.5-in to 3.9-in for a perfect lawn height.
- Fully Assembled & Foldable: Ready to use out of the box and stores compactly.
What We Like
- Excellent traction on hills
- Powerful 170cc engine
- Arrives fully assembled
- Durable steel deck
- Folds for easy storage
What We Don't Like
- Heavier than FWD models
- Single speed limits pace control
Why We Selected This Product
Its performance on slopes is why this mower made our list. The rear-wheel drive system felt significantly more secure and powerful on inclines compared to front-wheel drive models. The engine is a powerhouse, showing no signs of strain even in taller grass. The combination of easy setup, powerful RWD, and a robust engine makes this an exceptional choice for homeowners with tough yards who need a machine they can rely on.
User Experience
Users with hilly or bumpy yards rave about this mower's performance. They frequently comment on how the RWD system pulls the mower up hills with minimal effort on their part. The quick, tool-free setup is another major plus. Owners appreciate the powerful engine and the clean cut it provides, often noting that it makes their challenging yard much easier to maintain. The foldable handle for storage is seen as a thoughtful and practical feature.
PowerSmart 22-Inch High Wheel Mower
Best in class for Large Yards
Designed for efficiency on large properties, the PowerSmart 22-inch mower helps you get the job done faster. The wider all-steel deck covers more ground with every pass, significantly cutting down on your total mowing time. It is powered by a strong 170cc OHV engine with an auto choke for easy, reliable starts. The self-propelled rear-wheel-drive system, combined with high 10-inch rear wheels, provides excellent stability and control, gliding over bumpy or uneven terrain with ease. This model focuses on efficient bagging with a large 1.4-bushel rear collector that is easy to empty, minimizing stops and keeping your lawn pristine. This mower is the ideal solution for homeowners with large, open yards who prioritize speed and simplicity in their lawn care routine.
Product Specs
| Engine | 170cc OHV |
| Deck Width | 22 Inches |
| Cutting Options | Bagging, Rear Discharge |
| Drive Type | Rear-Wheel Drive |
| Wheel Size | 7" Front, 10" Rear |
| Speed | 3.6 km/h |
Features
- Powerful 170cc Gas Engine: Delivers improved cutting efficiency with an easy-start auto choke.
- Self-Propelled RWD System: Provides great traction and control on varied terrain.
- Wide 22-Inch Cutting Deck: Durable steel deck built to last and cover more ground.
- Efficient Bagging Collection: 1.4-bushel rear bag for easy cleanup and composting.
- High Rear Wheels: 10-inch rear wheels add stability and control on uneven surfaces.
What We Like
- Wide 22-inch deck for faster mowing
- Powerful 170cc engine
- High wheels for better stability
- Effective rear-wheel drive
- Large capacity collection bag
What We Don't Like
- 2-in-1 functionality (no mulching or side discharge)
- Less maneuverable in very tight spaces
- Height adjustment not single-lever
Why We Selected This Product
The 22-inch deck is the star here, offering a noticeable improvement in mowing speed. We were impressed by how the high rear wheels helped the mower navigate rough patches smoothly. The engine is powerful enough to handle the larger blade without any performance drop. While it is a 2-in-1 model, its bagging is highly effective, making it a great choice for those who prefer a perfectly clean lawn finish. It provides a powerful, fast cut for big jobs.
User Experience
Owners of large yards are the biggest fans of this mower. They consistently report a significant reduction in the time it takes to mow their lawn. The high wheels are praised for making the mower feel stable and easy to handle despite its larger size. Users find the engine to be powerful and dependable, and the large-capacity bag is appreciated for reducing the frequency of emptying. It's often called a time-saver and a workhorse.
PowerSmart 22-Inch B&S Mower
Best in class for Wide-Deck Performance
This PowerSmart model combines the best of both worlds: the efficiency of a 22-inch wide deck and the proven reliability of a USA-made Briggs and Stratton E550 140cc engine. The Prime 'N Pull system ensures starting is simple and dependable. The rear-wheel self-propel technology gives you excellent traction for confident mowing on slopes and uneven ground. This mower is also highly versatile, offering 3-in-1 functionality to mulch, side-discharge, or bag your clippings. The 22-inch seamless stamped steel deck is not only wide but also durable, designed to provide fine cuts for a healthier lawn. With a 6-position height adjustment, you have complete control over your lawn's finish. It is the perfect choice for users who want the time-saving benefit of a wide deck without compromising on engine quality or cutting options.
Product Specs
| Engine | 140cc Briggs and Stratton E550 |
| Deck Width | 22 Inches |
| Cutting Options | 3-in-1 |
| Drive Type | Rear-Wheel Drive |
| Height Settings | 6-Position (1.5" - 3.9") |
| Deck Material | Stamped Steel |
Features
- Reliable Briggs and Stratton 140cc Engine: Prime 'N Pull system for easy, dependable starts.
- Efficient Self Propel RWD: Improved traction and performance on slopes.
- Versatile 3-in-1 System: Mulch, side-discharge, or bag with a 1.4-bushel collector.
- Wide 22-Inch Steel Deck: Stamped steel deck provides ultra-fine, healthy cuts.
- 6-Position Height Adjustment: 2-lever system for cutting heights from 1.5 to 3.9 inches.
What We Like
- Trusted Briggs & Stratton engine
- Time-saving 22-inch deck
- Full 3-in-1 functionality
- Excellent traction from RWD
- Durable construction
What We Don't Like
- 2-lever height adjustment is less convenient
- Heavier and larger, making storage a consideration
Why We Selected This Product
This mower stood out for its complete feature set. You get the wide deck, the premium B&S engine, and full 3-in-1 capability. In our evaluation, the mower felt powerful and robust. The rear-wheel drive handled inclines well, and the engine ran flawlessly. It represents a premium experience within the budget category, making it an excellent long-term investment for homeowners who want it all.
User Experience
Users are highly satisfied with this mower's combination of features. The Briggs and Stratton engine is a major draw, with many reporting easy starts and smooth, powerful operation. The 22-inch deck is lauded for its ability to reduce mowing time on larger lawns. Reviewers also appreciate having all three clipping disposal options available. It is often described as a durable, high-performance machine that handles tough jobs with ease.
EGO POWER+ Self-Propelled Cordless Mower
Best in class for Electric Alternative
For those ready to ditch gas and oil, the EGO POWER+ LM2134SP-2 represents the peak of cordless electric mowing technology. While not a gas mower, its performance rivals and often exceeds its gas-powered counterparts. The Select Cut multi-blade system delivers a premium cutting quality, and the Touch Drive self-propelled technology puts intuitive speed control right at your fingertips. Powered by two 56V 6.0Ah ARC Lithium batteries, it can run for up to 100 minutes on a single charge. Its high-efficiency brushless motor is quiet, durable, and produces zero emissions. Features like push-button start, 8 cutting height positions, 3-in-1 functionality, and bright LED headlights for mowing at dawn or dusk make this a truly premium experience. It is the ultimate choice for the tech-savvy, eco-conscious homeowner who demands top-tier performance without compromise.
Product Specs
| Power Source | 56V 6.0Ah ARC Lithium Batteries (x2) |
| Deck Width | 21 Inches |
| Runtime | Up to 100 minutes |
| Drive Type | Self-Propelled, Variable Speed (Touch Drive) |
| Height Settings | 8-Position (1" - 4") |
| Motor | Brushless |
Features
- Select Cut Multi-Blade System: Delivers customizable, premium cutting performance.
- Touch Drive Self-Propelled Tech: Puts complete speed control in the palm of your hands.
- Long Runtime: Up to 100 minutes with the two included 6.0Ah batteries.
- High-Efficiency Brushless Motor: Provides quiet, powerful, and durable performance.
- 8 Cutting Height Positions: Adjusts from 1 to 4 inches for ultimate control.
- Premium Features: Push-button start, 3-in-1 function, and bright LED headlights.
What We Like
- Extremely quiet operation
- No gas, oil, or emissions
- Effortless push-button start
- Excellent cut quality
- Very low maintenance
What We Don't Like
- Higher initial purchase price
- Runtime is limited by battery charge
- Batteries add to the overall weight
Why We Selected This Product
We included this mower to show what the future of lawn care looks like. Its performance is genuinely impressive. The cut quality is exceptional, and the Touch Drive system is incredibly intuitive and responsive. It is remarkably quiet compared to gas mowers. While its price is typically above the under 400 category, it offers a compelling alternative for those willing to invest in a hassle-free, low-maintenance, and environmentally friendly solution.
User Experience
Owners are overwhelmingly positive, frequently citing the quiet operation and lack of fumes as game-changing features. The push-button start and effortless self-propel system are loved for their convenience. Users are impressed by the battery life and the mower's ability to power through thick grass. Many state they will never go back to a gas mower after experiencing the ease and performance of the EGO POWER+.
What to Look for Before Buying the Best Self Propelled Gas Lawn Mower Under 400
Choosing the right lawn mower involves more than just picking the one with the biggest engine. Consider these crucial factors to ensure you get a machine that perfectly matches your yard and your needs.
Find Your Need - Compatibility and use case considerations
Before you start shopping, assess your lawn. How large is it? A standard 21-inch deck is great for yards up to a half-acre, but for larger properties, a 22-inch model could save you significant time. Is your yard flat, or does it have hills and slopes? For inclines, a rear-wheel-drive (RWD) mower offers superior traction compared to a front-wheel-drive (FWD) model. If your yard has many obstacles like trees and garden beds, a more maneuverable FWD mower might be a better choice.
Budget - Setting realistic price expectations
While this guide focuses on mowers under $400, prices can fluctuate. Generally, models in the $300-$350 range will offer a solid 140cc-170cc engine, a steel deck, and 2-in-1 or 3-in-1 functionality. As you approach the $400 mark, you can expect to find premium features like engines from reputable brands like Briggs & Stratton, wider cutting decks, or more robust wheel and transmission systems. Set your budget based on the features that are most important for your specific lawn.
Key Features - Most important technical specifications
- Engine Size (cc): Measured in cubic centimeters, this indicates the engine’s power. For most residential lawns, an engine between 140cc and 170cc is more than sufficient to handle thick or tall grass without bogging down.
- Drive System (FWD vs. RWD): Front-wheel drive is great for flat lawns with many obstacles, as you can easily tilt the mower back to make tight turns. Rear-wheel drive provides better traction and is essential for mowing up hills.
- Cutting Deck Size: Most mowers in this price range have a 21-inch deck. A 22-inch deck will reduce the number of passes you need to make, saving time on larger lawns.
- 3-in-1 Capability: This refers to the ability to mulch (finely chop and return clippings to the lawn), bag (collect clippings), or side-discharge. This versatility is highly recommended as it allows you to adapt to different grass conditions.
Quality & Durability - What to look for in construction
The cutting deck is the backbone of the mower, and a stamped steel deck is the standard for durability in this category. Check the wheel size; larger rear wheels (8 inches or more) help the mower navigate bumpy and uneven terrain more smoothly. Also, consider the handle design—an ergonomic, padded handle can reduce fatigue during long mowing sessions, and a foldable handle is a must-have for compact storage.
Brand Reputation - Importance of established manufacturers
While many brands offer great mowers, some have a long-standing reputation for quality and reliability. Brands like CRAFTSMAN are well-known in the lawn care space. Furthermore, look for mowers that use engines from specialized manufacturers like Briggs & Stratton, as these are often a mark of quality and easier to find parts for down the line.
Portability/Size - Considerations for space and storage
A gas mower takes up a significant amount of space in a garage or shed. Almost all modern mowers feature foldable handles that allow them to be stored more compactly. Some can even be stored vertically to save floor space, but be sure to check the manufacturer’s instructions before doing so. Consider the mower’s weight if you need to lift it over curbs or up steps regularly.
Is it A Wise Decision to Buy self propelled gas lawn mower under 400?
Investing in a self-propelled gas lawn mower under $400 is an incredibly wise decision for most homeowners with small to medium-sized yards. The primary benefit is the significant reduction in physical effort. Unlike a traditional push mower that requires you to provide all the forward momentum, a self-propelled model does the hard work for you, making mowing less of a chore and more of a walk. This is especially true for yards with any kind of slope or uneven terrain, where pushing a heavy machine can be exhausting and even dangerous.
Compared to more expensive models, the sub-$400 category offers the perfect sweet spot of performance and value. You get powerful, reliable engines, durable steel decks, and versatile cutting options without paying for commercial-grade features you may not need. When compared to battery-powered electric alternatives at a similar price point, gas mowers still typically offer more raw power and unlimited runtime—you just need to refuel, not wait for a battery to charge. The long-term benefits include saving hours of time and considerable physical strain over the life of the mower, leading to a more enjoyable and sustainable lawn care routine.
What Is the Best Way to Choose self propelled gas lawn mower under 400?
Choosing the best mower for your needs involves a thoughtful, step-by-step approach. Follow these professional tips to make the right choice.
1. Accurately Assess Your Lawn: Before anything else, walk your property. Measure the approximate square footage. Note the terrain: Is it mostly flat, or are there significant slopes? Do you have a simple, open lawn or one dotted with trees, gardens, and pathways? This assessment is the foundation of your decision.
2. Prioritize Your Drive System:
- For Hilly/Sloped Yards: Immediately narrow your search to Rear-Wheel Drive (RWD) models. They provide the necessary traction to power up inclines safely and effectively.
- For Flat Yards with Obstacles: Front-Wheel Drive (FWD) offers superior maneuverability. You can easily pivot the mower on its back wheels to navigate tight turns.
- For Mostly Open, Flat Yards: Either drive system will work well, so you can focus on other features.
3. Match Engine Power to Your Grass Type: If you have a tough, thick grass variety like St. Augustine or Bermuda, or if you sometimes let your lawn get a little long between mows, opt for a more powerful engine (150cc to 170cc). For finer grasses that are mowed regularly, a 140cc engine is perfectly adequate.
4. Don’t Overlook the Conveniences:
- Starting System: Look for mowers with an “auto choke” or “ReadyStart” feature. These eliminate the need to prime or choke the engine manually, making starts much easier.
- Height Adjustment: A single-lever height adjustment system is far more convenient than dual-lever or four-lever systems, allowing you to change the cutting height of all four wheels instantly.
- Washout Port: A deck washout port is a hose attachment that lets you easily clean grass clippings from the underside of the deck, preventing rust and maintaining performance.
5. Avoid Common Mistakes:
- Buying Too Much Mower: A giant 22-inch mower might seem efficient, but it can be cumbersome and difficult to navigate in a small, intricate yard.
- Ignoring Ergonomics: A handle that is at an uncomfortable height or isn’t padded can make mowing a miserable experience. If possible, try to get a feel for the mower’s handle in a store.
- Forgetting About Storage: Measure your storage space before you buy. Ensure the mower you choose, with its handle folded, will fit comfortably.
FAQ
What is the best self propelled gas lawn mower under 400 for beginners?
For beginners, the PowerSmart 21-Inch Rear-Wheel Drive Mower (B0F1C8RMGJ) is an excellent choice. It often arrives fully assembled, eliminating setup headaches. Its straightforward operation, reliable auto-choke engine, and effective self-propel system make it very user-friendly. It provides all the core benefits without overwhelming a new user with complex features, making it a great entry into gas-powered mowers.
How much should I spend on self propelled gas lawn mower under 400?
You should expect to spend between $300 and $400 for a quality self-propelled gas mower. Models in the lower end of this range offer solid basic performance, while those closer to $400 will include features like premium Briggs & Stratton engines, wider cutting decks, or more robust construction. Your budget should align with the specific needs of your lawn, such as its size and terrain.
What features are most important in self propelled gas lawn mower under 400?
The most important features are a reliable engine (140cc-170cc), the correct drive system for your terrain (RWD for hills, FWD for maneuverability), a durable steel cutting deck, and versatile 3-in-1 capability (mulch, bag, discharge). A single-lever height adjustment and a foldable handle for storage are also highly valuable convenience features to look for.
How do I maintain my self propelled gas lawn mower under 400?
Regular maintenance is key to longevity. This includes checking the oil before each use, cleaning the underside of the deck after mowing, and sharpening the blade at least once per season. Annually, you should change the oil, replace the spark plug, and clean or replace the air filter. Always use fresh gasoline with a fuel stabilizer to prevent engine problems.
Are expensive self propelled gas lawn mower under 400 worth it?
As you approach the $400 mark, you are typically paying for tangible upgrades in quality and performance. Mowers in this range often feature more reliable and durable engines (like Briggs & Stratton), wider decks that save time, and better build quality overall. If you have a larger or more challenging yard, investing in a model at the higher end of this budget is often worth it for the added durability and efficiency.
What brands make the best self propelled gas lawn mower under 400?
In this price range, brands like PowerSmart and AMERISUN offer excellent value by packing powerful features into an affordable package. CRAFTSMAN is another top contender, known for its long-standing reputation for durability and reliability. The key is often not just the mower brand but also the engine brand; models featuring engines from Briggs & Stratton are highly regarded.
How long do self propelled gas lawn mower under 400 typically last?
With proper maintenance, a good self-propelled gas lawn mower in this price range can easily last 8 to 10 years or even longer. The lifespan is directly tied to how well you care for it. Regular oil changes, blade sharpening, and proper off-season storage are crucial for maximizing the life of your mower and ensuring it runs smoothly for years to come.
Can I find good self propelled gas lawn mower under 400 on a budget?
Absolutely. The sub-$400 market is highly competitive, meaning you can find excellent mowers without overspending. Budget-friendly models may have slightly less powerful engines or fewer convenience features, but they still offer the core benefit of self-propulsion. Look for models with good user reviews and a solid feature set that matches your basic needs.
Final Verdict
After extensive research and comparison, we confidently recommend the AMERISUN 21-Inch 3-in-1 Gas Mower as the best overall self-propelled gas lawn mower under $400.
It masterfully balances a powerful 170cc engine, versatile 3-in-1 functionality, and user-friendly features like large rear wheels and single-lever height adjustment, making it a workhorse for almost any lawn.
For those on a tighter budget, the PowerSmart 21-Inch Rear-Wheel Drive Mower offers unbeatable value, delivering essential self-propelled power and no-fuss assembly at an incredible price point.
If you prioritize engine reliability above all else, the PowerSmart 22-Inch Mower with its Briggs & Stratton Engine is a fantastic choice, providing peace of mind and robust performance.
Your ideal mower is on this list. Assess your yard’s needs, review our top picks, and click the link to make a purchase that will transform your lawn care routine for years to come.
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