A self-propelled lawn mower can make yard work easier, especially on sloped lawns or larger areas where pushing a mower takes more effort. Models under $400 can provide useful features such as variable speed, adjustable cutting heights, mulching capability, and side discharge. The best choice should offer dependable performance without stretching your budget.
Different self-propelled mowers use different engine types, drive systems, deck sizes, and controls. Gas models can provide strong cutting power and longer operation without charging, while battery-powered options can offer quieter use and easier starting. Front-wheel drive, rear-wheel drive, and all-wheel drive systems also suit different yard conditions.
Your lawn size and terrain should guide your choice. Check the cutting width, drive system, engine or battery power, height adjustment, grass bag capacity, and expected runtime before buying. A comfortable handle and simple speed control can make longer mowing sessions easier, while a durable deck can improve long-term value.
This guide covers five of the best self-propelled lawn mowers under $400. We focus on cutting performance, self-propelled drive, engine or battery power, cutting width, speed control, height adjustment, bagging, mulching, durability, ease of use, maintenance, and overall value. These factors can help you choose a reliable mower that makes routine lawn care easier while staying within a $400 budget.
5 Best Self Propelled Lawn Mowers Under 400
| Image | Title | Best For | Link |
|---|---|---|---|
 |
Greenworks 60V 21-Inch Self-Propelled Lawn Mower | Ideal for large residential yards needing cordless freedom and gas-like power. more | View on Amazon |
 |
PowerSmart 21-Inch Gas Self-Propelled Lawn Mower | Perfect for tough mowing jobs on medium to large lawns. more | View on Amazon |
 |
Litheli 40V 16-Inch Cordless Electric Mower | Best for users seeking a lightweight, easy-to-maneuver battery mower. more | View on Amazon |
 |
LawnMaster 15-Inch Electric Corded Lawn Mower | Great for small yards requiring precise, eco-friendly trimming. more | View on Amazon |
 |
WORX WG743 40V Cordless Lawn Mower | Compact design ideal for 1/8 acre yards with narrow paths. more | View on Amazon |
Detailed Reviews
Selecting a self-propelled mower under $400 requires balancing power, deck size, and run-time efficiency. This section breaks down the top models to help you understand how different features—such as battery systems, engine performance, and maneuverability—impact your mowing experience so you can choose the best machine for your lawn size and terrain.
| POWER | 60V Brushless Motor |
| DECK SIZE | 21-inch |
| BATTERY | Two 4.0Ah batteries included |
The Greenworks 60V 21-Inch mower is a powerhouse for homeowners who want to switch from gas to electric without sacrificing performance. Its dual 4.0Ah battery system provides enough longevity to tackle large yards up to 3/4 acre, while the brushless motor ensures quiet, efficient operation.
With its self-propelled rear-wheel drive, this unit makes short work of slopes and dense grass. The inclusion of a rapid charger and an extra blade adds significant value, making this a top-tier choice for those who value both power and maintenance-free convenience.
- Impressive gas-like power
- Zero emissions and quiet operation
- Adjustable pace for precision control
- Comes with two batteries and a rapid charger
- Heavier than non-propelled models
- Battery charge time depends on terrain difficulty
Large yards up to 3/4 acre where you want to maintain gas-level performance without the noise or fuel costs.
| ENGINE | 170cc OHV Engine |
| DECK SIZE | 21-inch |
| FUNCTION | 3-in-1 (Bag, Mulch, Discharge) |
For those who prefer the raw power of a gas-powered machine, the PowerSmart 21-inch self-propelled mower is a formidable contender. Featuring a 170cc OHV engine, it provides the consistent, high-torque performance required for thicker, tougher grass patches that battery models might struggle with.
The 3-in-1 functionality—allowing for bagging, mulching, or rear-discharge—adds versatility, while the 6-position height adjustment ensures you can always achieve the perfect lawn look. Its 10-inch rear wheels offer excellent traction on uneven terrain, making it a rugged choice for demanding yards.
- Robust 170cc engine for tough tasks
- Highly versatile 3-in-1 cutting system
- Easy height adjustments
- Large wheels improve maneuverability
- Requires fuel and routine maintenance
- Louder operation than electric models
Homeowners with medium to large yards who prioritize raw power and reliability over the quietness of electric alternatives.
| POWER | 40V Brushless Motor |
| CUTTING WIDTH | 16-inch |
| WEIGHT | 27.1 lbs |
The Litheli 40V 16-inch mower stands out for its lightweight, highly maneuverable design. Weighing just over 27 pounds, it is incredibly easy for users of all ages to handle, reducing physical strain while keeping your lawn perfectly manicured.
Equipped with a high-efficiency brushless motor and two included 4.0Ah batteries, this mower offers consistent run-time for most small-to-medium yards. With six height adjustments, you have the flexibility to tackle various grass types and seasonal conditions with ease.
- Extremely lightweight and easy to push
- Brushless motor provides reliable runtime
- Compact size for effortless storage
- Versatile 6-height adjustments
- Narrower 16-inch deck takes longer on large lawns
- Less suitable for extremely thick, overgrown grass
Users looking for a low-maintenance, easy-to-maneuver electric mower for smaller, residential yard setups.
| POWER | 11AMP Motor |
| CUTTING WIDTH | 14-inch |
| RPM | 3,300 RPM |
The LawnMaster MEB1114K is the ultimate tool for compact yards where fuel management is a non-starter. This corded electric model delivers 3,300 RPM of cutting power, ensuring that even a small mower can produce professional-looking results without the need for battery charging or gas mixing.
Its 15-inch compact design is perfect for tight navigation in urban spaces. With 5-height adjustment positions and a generous 7-gallon collection bag, you get a clean, tidy finish every time. It represents the best value for those with small yards who prioritize consistent power.
- Environmentally friendly and maintenance-free
- High torque with 3,300 RPM motor
- Lightweight and extremely maneuverable
- Great value for small-scale lawns
- Corded design limits operating range
- Requires a suitable outdoor extension cord
Small yards and precise trimming tasks where consistent power is preferred over battery freedom.
| POWER | 40V (2x20V) System |
| CUTTING WIDTH | 17-inch |
| TECH | Intellicut torque adjustment |
The WORX WG743 is a compact, smart mower designed specifically for 1/8 acre yards. Its “Intellicut” technology automatically adjusts the motor’s power based on grass density, saving battery life when cutting thinner grass and boosting power for thicker patches.
The mower is lightweight (35 lbs) and features a fully collapsible handle, making it an excellent space-saver for homeowners with limited storage. Its PowerShare compatibility means the batteries can be used in your other compatible WORX tools, offering an expandable ecosystem for your outdoor maintenance toolkit.
- Smart torque adjustment saves battery
- Collapsible handle for easy storage
- Part of the PowerShare tool platform
- Lightweight and efficient design
- Limited to smaller residential yards
- Requires multiple batteries for larger jobs
Apartment or townhouse owners with small yards who need a compact, smart, and expandable power tool solution.
Complete buying guide for Best Self Propelled Lawn Mowers Under 400
Battery vs. Gas Power
Battery-powered mowers are becoming the standard for residential use due to their low maintenance, quiet operation, and zero emissions. However, gas mowers still offer higher torque and longer, uninterrupted runtime for larger, tougher lawns.
Deck Size and Maneuverability
A 21-inch deck covers more ground quickly, ideal for medium-sized lawns. If your yard has narrow paths or tight landscaping, a smaller 15-17 inch deck will be much easier to maneuver.
Self-Propulsion Types
Rear-wheel drive models offer better traction when going up slopes, whereas front-wheel drive options allow for easier steering and tighter turns around garden beds. Choose based on the terrain of your specific yard.
Frequently Asked Questions
Are budget mowers reliable?
Yes, many models under $400, especially from reputable brands like Greenworks and PowerSmart, use reliable, high-efficiency motors designed for years of residential use.
What maintenance does a cordless mower need?
Cordless mowers require very little maintenance: keep the deck clean of grass clippings, sharpen or replace the blade annually, and ensure batteries are stored at appropriate temperatures.
Is a self-propelled mower necessary for a small yard?
While not strictly necessary, self-propulsion reduces physical fatigue, making the task significantly faster and more enjoyable, even on smaller, flat properties.
Conclusion
Finding a self-propelled mower for under $400 does not mean you have to compromise on power or efficiency. By focusing on your specific lawn requirements—whether you need the raw power of gas for thick grass or the low-maintenance, quiet operation of an electric cordless system—you can find a reliable machine that makes yard work a breeze.
Whether you choose the versatile Greenworks 60V for large areas or the compact, smart-feature-packed WORX, investing in one of these top-rated models will ensure your lawn looks professionally manicured for seasons to come.