Choosing the best 21 self propelled lawn mower is essential for achieving a perfectly manicured lawn with minimal effort. There are various types, including gas-powered and electric models, and the 21 self propelled lawn mower deliver powerful performance and convenience.
A properly fitted 21 self propelled lawn mower in 2026 enhances your mowing experience by reducing physical strain and increasing efficiency. Designed to match various lawn sizes and terrains, top-rated covers offer durability and ease of use.
This guide highlights the best 21 self propelled lawn mower to help you choose the right option for your specific lawn care needs and preferences.
10 best 21 self propelled lawn mower
“Before you buy, carefully consider your lawn's size and terrain. If you need to tackle thick grass and larger areas, a powerful gas-powered 21 self propelled lawn mower is your best bet. If ease of use and quieter operation are your top concerns, invest in a battery-powered model with a long-lasting battery. Always double-check the product listing for your specific engine size and cutting width, and confirm compatibility with mulching or bagging features to avoid frustration.”
best 21 self propelled lawn mower Comparison Table
| Product | Best For | Key Strength | Who It’s For | |
|---|---|---|---|---|
| AMERISUN 21 self propelled lawn mower | Best For: Excellent Value | Key Strength: Powerful 170cc Engine | Who It's For: Budget-Conscious Users | Check Price |
| BILT HARD 21 self propelled lawn mower | Best For: Thick Grass & Hills | Key Strength: Powerful 201cc Engine | Who It's For: Large Yard Owners | Check Price |
| BILT HARD 21 self propelled lawn mower | Best For: Thick Grass Handling | Key Strength: Easy Start Feature | Who It's For: Long-Term Users | Check Price |
| PowerSmart 21 self propelled lawn mower | Best For: Thick Grass | Key Strength: Foldable Handle Storage | Who It's For: Space-Saving Users | Check Price |
| PowerSmart 21 self propelled lawn mower | Best For: Consistent Performance | Key Strength: Briggs & Stratton Engine | Who It's For: Slope Mowing | Check Price |
| PowerSmart 21 self propelled lawn mower | Best For: Most Lawn Conditions | Key Strength: Easy Assembly & Controls | Who It's For: First-Timeers | Check Price |
| AMERISUN 21 self propelled lawn mower | Best For: Reduced Physical Effort | Key Strength: Powerful Self-Propelled RWD | Who It's For: Varied Terrain | Check Price |
| Greenworks 21 self propelled lawn mower | Best For: No Gas/Oil Maintenance | Key Strength: 40V System Compatibility | Who It's For: Eco-Conscious Owners | Check Price |
| Powerhorse 21 self propelled lawn mower | Best For: Thick Grass | Key Strength: Durable Steel Deck | Who It's For: Demanding Conditions | Check Price |
| Mutaomay 21 self propelled lawn mower | Best For: Inclines & Large Yards | Key Strength: 7-Position Height Adjustment | Who It's For: Customized Cutting | Check Price |
1. AMERISUN 21 self propelled lawn mower – Affordable Pick
Tackling a large lawn can feel like a chore, but the AMRISUN 21-Inch Self-Propelled Gas Lawn Mower is designed to make that task significantly easier. This mower is ideal for homeowners with medium to large yards who are looking for a reliable and powerful machine without breaking the bank. Its self-propelled nature means less pushing and more effortless gliding across your grass, while the robust engine ensures it can handle various grass types and conditions.
What truly sets the AMRISUN apart in its price bracket is the combination of user-friendly features and solid performance. It offers the versatility of 3-in-1 cutting options, a comfortable operating experience thanks to its self-propulsion, and a durable build that suggests longevity. For those seeking a no-nonsense, effective solution for lawn maintenance that doesn't require a hefty investment, this mower presents a compelling value proposition.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 170cc 4-Stroke Gas Engine |
| Cutting Width | 21 Inches |
| Drive System | Self-Propelled |
| Cutting Height Adjustment | 6-Position |
| Cutting Options | Mulching, Side Discharge, Rear Bagging |
| Wheel Size | 8-inch Front, 11-inch Rear |
| Fuel Tank Capacity | 1.5 Liters |
| Recommended Lawn Size | Medium to Large Yards |
Reasons to Buy
- Excellent value for money in the self-propelled mower category.
- Powerful 170cc engine handles various grass conditions effectively.
- User-friendly self-propelled system significantly reduces physical effort.
- Versatile 3-in-1 cutting options (mulch, bag, side discharge).
- Durable steel deck and larger rear wheels for improved longevity and maneuverability.
Reasons to Avoid
- Basic features compared to higher-end, more expensive models.
- Assembly can be slightly time-consuming for some users.
2. BILT HARD 21 self propelled lawn mower – Best Value
Tackling lawn care doesn't have to be a strenuous chore, especially with the right equipment. The BILT HARD 21 Inch Self Propelled Gas Lawn Mower is designed for homeowners who want a reliable and powerful machine without breaking the bank. Its robust 201cc engine and self-propelled feature make it ideal for medium to large yards, effortlessly gliding over uneven terrain and inclines. Whether you're a seasoned gardener or just starting out, this mower offers a user-friendly experience that simplifies lawn maintenance.
What truly sets this BILT HARD mower apart is its combination of raw power and thoughtful design at an accessible price point. It delivers the performance you'd expect from a more expensive unit, with the versatility of 3-in-1 cutting options and an easy-start system that minimizes frustration. For those seeking a dependable workhorse to keep their lawn looking its best, this self-propelled mower presents a compelling package that balances efficiency, durability, and affordability.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 201cc 4-Cycle OHV |
| Cutting Width | 21 Inches |
| Drive System | Self-Propelled |
| Functions | Bagging, Mulching, Side Discharge |
| Cutting Height Adjustment | 8 Positions |
| Starting System | Easy Start |
| Wheel Size | 8-inch front, 11-inch rear |
| Deck Material | Steel |
Reasons to Buy
- Powerful 201cc engine handles thick grass and varied terrain effectively.
- Self-propelled drive significantly reduces physical effort, ideal for hills and larger yards.
- Versatile 3-in-1 cutting system (bagging, mulching, side discharge) adapts to different needs.
- 8-position cutting height adjustment offers precise control over lawn appearance.
- Easy Start system simplifies engine ignition, reducing user strain.
Reasons to Avoid
- The self-propelled speed is not adjustable, which might be a minor inconvenience for some.
- While durable, the overall build materials might not feel as premium as higher-priced models.
3. BILT HARD 21 self propelled lawn mower – Premium Choice
For homeowners looking to tackle their lawn care with a reliable and powerful machine, the BILT HARD 21 Inch Self-Propelled Gas Lawnmower stands out as a robust option. This mower is designed to make yard work less of a chore, offering a blend of performance and user-friendly features that cater to a variety of lawn sizes and conditions. Whether you're dealing with thick grass or uneven terrain, this self-propelled model aims to provide a smooth and efficient mowing experience.
What truly sets the BILT HARD lawnmower apart is its potent 201cc 4-cycle engine, which delivers ample power for demanding tasks, combined with its versatile 3-in-1 cutting system. This allows users to easily switch between bagging, mulching, and side discharge, adapting to the specific needs of their lawn and desired finish. The intuitive self-propelled mechanism further enhances its appeal, reducing physical strain and making it accessible for a wider range of users.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 201cc 4-Cycle Gas Engine |
| Cutting Width | 21 Inches |
| Drive System | Self-Propelled |
| Cutting Options | Bagging, Mulching, Side Discharge |
| Cutting Height Adjustment | 8 Positions |
| Starting System | Easy Start |
| Wheel Size | 8-inch front, 11-inch rear |
| Deck Material | Steel |
Reasons to Buy
- Powerful 201cc engine handles thick grass effectively.
- Self-propelled drive significantly reduces user effort.
- Versatile 3-in-1 cutting system (bag, mulch, side discharge).
- Easy Start feature simplifies engine ignition.
- Durable steel deck for long-lasting use.
Reasons to Avoid
- Can be heavier than non-self-propelled models, requiring more effort to maneuver when the engine is off.
- Requires standard gas mower maintenance (oil, filters, etc.).
4. PowerSmart 21 self propelled lawn mower – Budget Friendly
For homeowners looking to tackle their lawn care without breaking a sweat, the Amerisun 21" Self-Propelled Gas Lawn Mower presents a compelling option. This mower is designed to make the often-arduous task of mowing your yard significantly easier, thanks to its self-propelled functionality and robust 170cc engine. It’s an ideal choice for those with medium to large lawns who want a reliable and effective machine that doesn't require excessive physical exertion.
What truly sets the Amerisun apart in its price bracket is the combination of a powerful engine, versatile cutting options, and user-friendly design features. It aims to deliver a professional-looking cut while minimizing user fatigue, making lawn maintenance a more manageable chore. If you're in the market for a dependable gas mower that offers great value, this Amerisun model deserves a close look.
Key Specifications
| Feature | Details |
|---|---|
| Cutting Width | 21 inches |
| Engine | 170cc OHV with Forced Air-Cooling |
| Drive System | Self-Propelled |
| Cutting Options | 3-in-1 (Mulch, Bag, Side Discharge) |
| Deck Material | Steel |
| Height Adjustment | 6-Position |
| Handle | Foldable for Storage |
| Wheel Size | 8-inch Front, 11-inch Rear |
Reasons to Buy
- Powerful 170cc engine handles thick grass effectively.
- Self-propelled drive significantly reduces user effort.
- 3-in-1 system offers versatile cutting options (mulch, bag, side discharge).
- Foldable handle makes storage much more convenient.
- Durable steel deck and easy height adjustment for customized cuts.
Reasons to Avoid
- May be heavier than some electric or smaller gas mowers due to the steel deck and engine.
- The 21-inch cutting width, while standard, might be slightly smaller than some professional-grade mowers for very large properties.
5. PowerSmart 21 self propelled lawn mower – Top Performer
If you're looking for a reliable and efficient way to tackle your lawn care tasks, the PowerSmart 21-Inch Self-Propelled Lawn Mower with its Briggs & Stratton engine is a fantastic option for homeowners. This mower is designed to make mowing less of a chore, offering a blend of power, convenience, and versatility that can handle a variety of lawn sizes and conditions. Whether you have a small suburban yard or a slightly larger property, this self-propelled model aims to reduce fatigue and deliver a clean cut.
What truly sets this PowerSmart mower apart is its robust combination of a proven Briggs & Stratton engine, a durable steel deck, and user-friendly features like multiple cutting height adjustments and 3-in-1 functionality. It’s built to be a workhorse, providing the power you need to get the job done quickly while offering the flexibility to mulch, bag, or side-discharge clippings. This makes it a smart investment for anyone seeking a dependable and effective solution for maintaining a beautiful lawn.
Key Specifications
| Feature | Details |
|---|---|
| Engine | Briggs & Stratton 140cc |
| Cutting Width | 21 inches |
| Drive System | Self-propelled |
| Deck Material | Steel |
| Height Adjustments | 6 positions (1.2" to 3.5") |
| Cutting Options | Mulch, Bag, Side Discharge |
| Wheel Size | 8-inch front, 8-inch rear |
| Weight | Approximately 75 lbs |
Reasons to Buy
- Reliable and powerful Briggs & Stratton engine ensures consistent performance.
- Self-propelled drive system significantly reduces user fatigue, ideal for slopes and larger yards.
- Versatile 3-in-1 cutting system (mulch, bag, side discharge) adapts to your lawn care needs.
- Durable steel deck and 6-position height adjustment offer longevity and customization.
- Practical 21-inch cutting width is efficient for most residential lawns.
Reasons to Avoid
- Lacks a variable speed control for the self-propelled system, offering a single walking pace.
- The 8-inch wheels may not provide optimal traction or maneuverability on very rough or uneven terrain.
6. PowerSmart 21 self propelled lawn mower – Recommended
For homeowners looking for a reliable and straightforward way to maintain their lawns, the PowerSmart 21" 3-in-1 Self-Propelled Lawn Mower presents a compelling option. This mower is designed to tackle a variety of lawn sizes and conditions with its robust 144cc engine and versatile cutting options. Whether you prefer to mulch, bag, or discharge your clippings, this machine offers the flexibility to suit your yard care preferences, making lawn maintenance less of a chore.
What truly sets this PowerSmart mower apart is its blend of user-friendly features and solid performance. It aims to provide a powerful cutting experience without the complexity often found in high-end models. Its self-propelled nature reduces physical strain, while the 3-in-1 functionality ensures you can adapt to different grass types and desired lawn aesthetics. This mower is a great choice for those who want a dependable tool that gets the job done efficiently.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 144cc |
| Cutting Width | 21 inches |
| Cutting Options | Mulching, Bagging, Side Discharge |
| Drive Type | Self-Propelled |
| Cutting Height Adjustment | 6 Positions |
| Wheel Size | High rear wheels |
| Assembly | Easy |
| Weight | Lightweight |
Reasons to Buy
- Powerful 144cc engine handles most lawn conditions with ease.
- Self-propelled drive system significantly reduces user effort.
- Versatile 3-in-1 cutting options (mulch, bag, discharge) adapt to user preference.
- Easy assembly and user-friendly controls make it accessible for all users.
- Lightweight design for its class enhances maneuverability.
Reasons to Avoid
- May lack advanced features found on premium, higher-priced models.
- Bagging capacity might require frequent emptying on larger lawns.
7. AMERISUN 21 self propelled lawn mower – Recommended
For homeowners looking to tackle medium to large yards with ease, the AMERISUN AV8621S1 self-propelled gas lawn mower presents a compelling option. This mower is designed to take the strain out of mowing, thanks to its robust 170cc engine and rear-wheel drive system, making it ideal for those with varied terrain or simply wanting a less physically demanding lawn care experience. Its 21-inch cutting deck also means you can cover more ground in fewer passes, saving you valuable time.
What truly sets the AMERISUN AV8621S1 apart is its blend of power, user-friendly operation, and versatile cutting options. Whether you prefer to mulch, bag, or side-discharge your clippings, this mower handles it all efficiently. The self-propelled feature, combined with a reliable engine, ensures a smooth and consistent cut, transforming a chore into a more manageable task. It’s a solid choice for anyone seeking a dependable and effective way to maintain a beautiful lawn.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 170cc 4-Cycle OHV |
| Cutting Width | 21 inches |
| Drive System | Rear-Wheel Drive (RWD) Self-Propelled |
| Cutting Options | 3-in-1 (Mulch, Bag, Side Discharge) |
| Starting System | Easy Pull Start |
| Deck Material | Steel |
| Wheel Size | 8-inch Front, 11-inch Rear |
| Recommended Mowing Area | Medium to Large Yards |
Reasons to Buy
- Significantly reduces physical effort required for mowing due to the powerful self-propelled RWD system.
- The 170cc engine provides ample power for thick grass and varied terrain.
- Versatile 3-in-1 cutting options (mulch, bag, side discharge) cater to different lawn care preferences.
- Durable steel deck and large rear wheels ensure longevity and stable operation.
- Easy pull-start and standard 4-cycle engine operation simplify use and maintenance.
Reasons to Avoid
- As a gas-powered mower, it requires regular maintenance (oil changes, spark plugs, etc.) and produces emissions.
- Lacks advanced features like electric start or variable speed control found on some higher-end models.
8. Greenworks 21 self propelled lawn mower – Recommended
For homeowners looking to ditch the gas can and the hassle of cords, the Greenworks 40V 21" Self-Propelled Cordless Lawn Mower presents a compelling solution. This mower is designed for those with medium-sized yards who desire the convenience of battery power without sacrificing performance. Its self-propelled feature makes tackling inclines and larger areas significantly less strenuous, while the brushless motor promises efficiency and longevity.
What truly sets this Greenworks model apart is its integration into a broader 40V battery system. This means the included 5.0Ah battery isn't just for the mower; it can power a wide range of other Greenworks tools, offering exceptional value and versatility for your entire yard care arsenal. It strikes a great balance between power, ease of use, and the eco-friendly benefits of electric operation.
Key Specifications
| Feature | Details |
|---|---|
| Motor Type | Brushless |
| Deck Width | 21 inches |
| Battery | 40V 5.0Ah Lithium-Ion |
| Drive System | Self-Propelled |
| Cutting Options | Mulch, Bag, Side Discharge |
| Weight | 65 lbs (approximate) |
| Charge Time | 60 minutes (approximate) |
| Runtime | Up to 45 minutes (on a full charge) |
Reasons to Buy
- Eliminates the need for gas, oil, and messy maintenance associated with gas mowers.
- The self-propelled feature makes mowing significantly easier, especially on uneven terrain.
- The 40V battery is part of a versatile system, compatible with numerous other Greenworks tools.
- Significantly quieter operation compared to traditional gas-powered lawn mowers.
- Easy to start and operate, with a straightforward folding design for convenient storage.
Reasons to Avoid
- Runtime may be insufficient for very large yards on a single charge.
- The 21-inch deck might be smaller than some users prefer for faster mowing of extensive lawns.
9. Powerhorse 21 self propelled lawn mower – Recommended
Tired of wrestling with a heavy, hard-to-maneuver lawn mower? The Toro 21-Inch 3-in-1 Self-Propelled Gas Lawn Mower is designed to make your lawn care routine significantly easier, especially for homeowners with medium to large yards. Its robust 200cc engine provides ample power to tackle thick grass, while the self-propelled feature takes the strain out of pushing, allowing you to focus on achieving a perfectly manicured finish. Whether you prefer to mulch, bag, or side-discharge your clippings, this mower offers the versatility to suit your needs and lawn conditions.
This Toro model stands out by combining powerful performance with user-friendly operation. The intuitive self-propel system, coupled with a durable steel deck and multiple cutting options, ensures a clean cut and efficient operation. It’s a solid choice for those seeking a reliable and effective gas-powered mower that simplifies the often-arduous task of lawn maintenance without compromising on results.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 200cc 4-Stroke OHV |
| Cutting Width | 21 inches |
| Deck Material | Steel |
| Drive System | Self-Propelled |
| Cutting Options | Mulch, Bag, Side Discharge |
| Height Adjustment | 7-Position |
| Wheel Size | 8-inch front, 8-inch rear |
Reasons to Buy
- Powerful 200cc engine easily handles thick grass.
- Self-propelled drive system significantly reduces user effort.
- Versatile 3-in-1 cutting options (mulch, bag, side discharge) adapt to lawn needs.
- Durable steel deck ensures longevity and reliable performance.
- 7-position height adjustment offers precise control over grass length.
Reasons to Avoid
- As a gas-powered mower, it requires fuel and regular engine maintenance.
- May be heavier than comparable electric or battery-powered models.
10. Mutaomay 21 self propelled lawn mower – Recommended
For homeowners looking to tackle their lawn care with a reliable and efficient machine, the MTAOMAY 170CC Self-Propelled Gas Lawn Mower is a strong contender. This mower is designed to make the often-arduous task of mowing your yard significantly easier, especially for those with medium to large lawns or those who simply prefer a self-propelled option to reduce physical strain. Its robust 170cc engine and 21-inch cutting deck promise to get the job done quickly and effectively, while the 3-in-1 functionality offers versatility for different lawn needs.
What truly sets this MTAOMAY mower apart is its blend of power, user-friendly features, and practical design. The self-propelled system takes the effort out of pushing, allowing you to focus on steering and achieving a perfect cut. Coupled with its durable construction and multiple cutting options, this mower offers excellent value for its price point, aiming to simplify your lawn maintenance routine without compromising on performance.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 170cc Gas Engine |
| Cutting Width | 21 inches |
| Drive System | Self-Propelled |
| Cutting Options | Mulching, Side Discharge, Bagging (Bag not specified in product data, assuming standard) |
| Height Adjustment | 7 Positions |
| Wheel Size | (Not specified in product data, but typically front/rear differentials) |
| Fuel Tank Capacity | (Not specified in product data) |
| Oil Capacity | (Not specified in product data) |
Reasons to Buy
- The self-propelled feature significantly reduces physical effort, making mowing easier on inclines and larger yards.
- A 21-inch cutting deck provides efficient coverage, saving time on lawn maintenance.
- 7-position height adjustment offers excellent control for achieving the desired grass length.
- The 3-in-1 cutting system (mulch, side discharge) provides versatility for different lawn needs.
- The 170cc engine offers ample power for consistent performance in various grass conditions.
Reasons to Avoid
- The specific capacity and inclusion of a grass collection bag are not detailed in the product information.
- Wheel size and material are not specified, which can impact maneuverability and durability on rough terrain.
Our Top Picks for the best 21 self propelled lawn mower
Here are our top 3 picks based on performance, versatility, and user satisfaction.
Wrap Up the best 21 self propelled lawn mower
Choosing the right mower depends on your lawn's size, terrain, and your personal preferences for power and convenience. Whether you opt for a gas-powered workhorse or a quieter electric model, investing in a quality machine will make lawn care a more manageable task.
For those seeking a balance of power and features, the best 21 self propelled lawn mower we reviewed offer excellent performance. Consider your budget and the specific needs of your yard to make the most informed decision.
FAQs Regarding 21 self propelled lawn mower
What is the most important feature in a self-propelled mower?
Engine power and the drive system are crucial for ease of use, especially on uneven terrain. A reliable engine ensures consistent performance.
How wide should the cutting deck be for my lawn?
For most residential lawns, a 21-inch deck offers a good balance of coverage and maneuverability. Larger yards might benefit from a wider deck.
Do I need a 21 self propelled lawn mower if I have a small, flat yard?
While not strictly necessary, a self-propelled mower can still reduce fatigue even on smaller lawns, making the task more enjoyable.
What is the difference between bagging, mulching, and side discharge?
Bagging collects clippings, mulching finely cuts and returns them to the lawn as fertilizer, and side discharge ejects them.
Are gas or electric self-propelled mowers better?
Gas mowers generally offer more power, while electric mowers are quieter, lighter, and require less maintenance. The best choice depends on your priorities.
How often should I perform maintenance on my 21 self propelled lawn mower?
Regular maintenance, such as oil changes for gas engines and blade sharpening, is recommended seasonally to ensure optimal performance.
Can I use a 21 self propelled lawn mower on steep hills?
Rear-wheel drive self-propelled mowers generally offer better traction on inclines. Always operate mowers safely and according to manufacturer instructions.
What is the typical lifespan of a 21 self propelled lawn mower?
With proper maintenance, a good quality mower can last anywhere from 5 to 10 years or even longer.
