A perfectly manicured lawn is a point of pride, but achieving it shouldn’t feel like a chore. This season, make the task easier and more efficient with a 21-inch self-propelled lawn mower. The self-propelled feature does the hard work for you, providing the power to effortlessly tackle hills and thick grass, while the 21-inch cutting deck is the ideal size for covering medium to large yards quickly and evenly.
Whether you prefer the quiet, low-maintenance convenience of a battery-powered model or the traditional power of gas, there is a perfect mower for your needs. Our roundup features top-rated options from trusted brands, highlighting the key features that make each one stand out. From brushless motors for extended runtime to versatile cutting modes and durable steel decks, these mowers are designed to deliver a superior cut with minimal effort.
The Best 21-Inch Self-Propelled Lawn Mowers
- Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower
- PowerSmart 21-Inch Gas Lawn Mower with B&S Engine
- Greenworks 60V 21″ Self-Propelled Cordless Lawn Mower
- BILT HARD 21 Inch Self Propelled Gas Lawn Mower
- PowerSmart Gas Lawn Mower, 21-Inch Self-Propelled
- MightyMow 2 * 20V 21 inch Self-Propelled Lawn Mower
- EGO POWER+ Electric Lawn Mower, Self-Propelled
- Snapper XD 21-Inch 82V Cordless Self-Propelled Mower
- Toro Recycler 22-in Self-Propelled Gas Lawn Mower
Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower
Experience high-performance cordless mowing with the Greenworks 80V model. Its brushless motor provides substantial torque for demanding conditions while ensuring quiet operation and a longer motor life. The durable 21-inch steel deck is built to last season after season.
This mower is designed for efficiency and control. With a single 4.0Ah battery, it can handle up to half an acre on a single charge. The self-propelled rear-wheel drive with variable speed control offers maximum traction and maneuverability, making it simple to navigate your yard’s terrain.
PowerSmart 21-Inch Gas Lawn Mower with B&S Engine
For those who prefer traditional gas power, the PowerSmart mower is equipped with a reliable 140cc Briggs & Stratton engine. This engine is known for its dependable startup and consistent performance, even when dealing with thick, tall, or damp grass.
The 21-inch steel deck allows you to cover more ground with each pass, significantly reducing your mowing time. It offers a 3-in-1 design, letting you easily switch between bagging, mulching, and rear-discharge functions to suit your lawn care preferences.
Greenworks 60V 21″ Self-Propelled Cordless Lawn Mower
This Greenworks 60V model provides a robust cordless solution with the convenience of two batteries. It includes two 4.0Ah batteries and a rapid dual-port charger, ensuring you have enough power to complete your lawn without interruption.
Its self-propelled rear-wheel drive makes tackling slopes and thick grass feel effortless. For added versatility, it functions as a 4-in-1 mower, offering mulching, bagging, side discharge, and even a turbo leaf pickup mode. The LED headlights extend your mowing window into the early morning or evening.
BILT HARD 21 Inch Self Propelled Gas Lawn Mower
The BILT HARD mower is built for power and reliability, featuring a substantial 201cc 4-cycle OHV engine. This engine delivers strong torque for efficient cutting performance. A notable benefit is its no-choke, no-primer design, which simplifies the starting process.
Its 3-in-1 steel deck provides mulching, side discharge, and rear bagging capabilities. The single-speed self-propelled system with rear-wheel drive moves the mower smoothly across your lawn, reducing physical strain. The ergonomic, foam-wrapped handle adds to the comfort during longer mowing sessions.
PowerSmart Gas Lawn Mower, 21-Inch Self-Propelled
Another strong gas-powered contender from PowerSmart, this mower also uses a dependable 140cc Briggs & Stratton engine. It is designed for consistent power to handle various grass conditions without stalling or bogging down.
The heavy-duty 21-inch steel deck ensures a clean, even cut across large lawns. You can choose from six different cutting height positions and utilize the 3-in-1 system to either collect, mulch, or discharge your grass clippings based on your immediate needs.
MightyMow 2 * 20V 21 inch Self-Propelled Lawn Mower
The MightyMow cordless mower stands out with its impressive battery configuration. It comes with two 8.0Ah batteries, providing up to 60 minutes of runtime with the self-propelled feature engaged. This makes it a great option for larger lawns that demand extended use.
It features a powerful brushless motor that spins the blade at up to 3100 RPM for a clean, efficient cut. The self-propelled function offers a speed range from 2.0 to 4.3 feet per second, giving you full control over your mowing pace, especially useful on inclines.
EGO POWER+ Electric Lawn Mower, Self-Propelled
The EGO POWER+ LM2135SP is a leader in cordless innovation. It features the Select Cut Multi-Blade system, which utilizes two blades to deliver a premium cut that rivals, and often exceeds, the quality of gas mowers. The result is a beautifully manicured lawn.
Its standout feature is the Touch Drive self-propelled technology, which allows you to control the mower’s speed intuitively with a simple touch lever on the handle. Powered by a large 56V 7.5Ah battery, it provides up to 60 minutes of run time for extensive mowing sessions.
Snapper XD 21-Inch 82V Cordless Self-Propelled Mower
Snapper brings its reputable name to the cordless market with the high-voltage XD model. Operating on an 82V platform, this mower is built to deliver gas-like power without the noise, fumes, or maintenance. It is designed for homeowners who need robust performance for challenging lawns.
As a self-propelled model, it reduces user fatigue and makes mowing large or hilly properties much more manageable. While specific features may vary, Snapper’s commitment to durability and quality cutting performance is a constant across its product line.
Toro Recycler 22-in Self-Propelled Gas Lawn Mower
The Toro Recycler is a well-known name in the gas mower segment, celebrated for its innovative Personal Pace self-propelled system. This system automatically matches the mower’s speed to your walking pace, providing a seamless and intuitive mowing experience.
It features a slightly larger 22-inch deck for increased efficiency. The proprietary Recycler cutting technology is designed to finely clip grass and leaves, returning valuable nutrients to your lawn for a healthier turf. It is a smart choice for those seeking a top-tier gas mowing solution.
Buying Guide: How to Choose a 21-Inch Self-Propelled Lawn Mower
When I started looking for a new mower, I quickly realized that a 21-inch self-propelled model is the sweet spot for many homeowners. It’s wide enough to cover ground efficiently but still maneuverable enough to get around tight spots. The self-propelled part is a game-changer, especially if you have hills or just don’t want to push a heavy machine all afternoon. But with so many options, how do you pick the right one for your yard? I’ve found that focusing on a few key areas makes the decision much easier.
First, consider the engine type. You’re generally choosing between gas and electric. Gas mowers offer the most power and total freedom from cords, which is great for large properties. Look for a reputable engine brand like Briggs & Stratton or Honda. Electric models break down into corded and cordless (battery-powered). Corded mowers are lighter, quieter, and have lower maintenance, but you are tethered to an outlet and an extension cord. Cordless mowers give you cord-free convenience; just make sure the battery life and voltage (like 40V or 80V) are sufficient to handle your entire lawn on a single charge.
Next, think about the drive system. This is what makes it self-propelled. The two main types are front-wheel drive (FWD) and rear-wheel drive (RWD). FWD is excellent for flat lawns. The pulling motion makes it feel lighter and easier to guide, almost like a shopping cart. RWD is what you want for any kind of slope or hilly terrain. The rear wheels push the mower, providing much better traction and preventing the front end from lifting on inclines. Some higher-end models even have all-wheel drive (AWD) for maximum traction on uneven ground.
Don’t overlook the cutting deck material and height adjustments. Decks are usually made from steel, which is durable, or aluminum, which is lighter and rust-resistant. For height adjustments, a single-lever that changes the height of all four wheels at once is a massive time-saver compared to adjusting each wheel individually. Finally, consider the bagging and mulching options. A good mower will offer a 3-in-1 system: bagging for a clean finish, mulching to return nutrients to the soil, and side-discharge for cutting very tall grass. Thinking about these factors will help you find one of the best 21-inch self-propelled lawn mowers for your specific needs.
Frequently Asked Questions
What is the advantage of a self-propelled mower over a push mower?
The main advantage is the reduced physical effort. The mower does the work of moving itself forward; you’re really just there to guide it. This is a huge benefit if you have a large yard, any kind of slope, or simply want to make mowing less of a chore. It allows you to finish the job faster and with less fatigue, which for me, makes the whole task much more manageable.
How long should a 21-inch self-propelled lawn mower last?
With proper maintenance, a quality mower should last you a long time. I’ve seen well-cared-for gas models run for 8 to 10 years, and sometimes even longer. The lifespan depends heavily on how you treat it. Key things include changing the oil and air filter regularly (for gas models), cleaning the deck after use, using fresh fuel, and storing it in a dry place. Electric mowers often have fewer mechanical parts to worry about, which can also contribute to a long service life.
Are battery-powered self-propelled mowers as powerful as gas?
This used to be a big concern, but battery technology has improved dramatically. For most residential lawns, a high-voltage battery-powered mower (think 40V and above) is more than powerful enough. They start instantly with the push of a button and are much quieter and cleaner. The main consideration is runtime. You need to match the battery’s amp-hour (Ah) rating to the size of your lawn to ensure you can finish the job without needing a recharge.
What type of self-propelled drive is best for a hilly yard?
If you have hills, rear-wheel drive (RWD) is definitely the way to go. The pushing power from the rear wheels gives you superior traction on inclines, preventing the mower from slipping or the front wheels from lifting. Some models even offer all-wheel drive (AWD), which is the best option for very steep or uneven terrain. Front-wheel drive is better suited for flat lawns, as it’s easier to maneuver but can struggle on hills.
How important is the deck material?
The deck material affects the mower’s durability and weight. Steel decks are very strong and common, but they can be prone to rust if the paint gets chipped and aren’t cared for. Aluminum decks are lighter and won’t rust, which is a big plus if you live in a humid climate. For most people, either will work fine, but an aluminum deck can be a worthwhile investment for its longevity and lighter weight, making it easier to lift for cleaning or storage.