Greenworks 40V 21" Brushless Cordless (S vs WORX Nitro Cordless Lawn Mower, 21" Elec
Quick Verdict
The WORX Nitro Cordless Lawn Mower is the stronger choice for most homeowners, particularly those with uneven terrain or who value variable speed control for precise maneuvering. The Greenworks 40V 21" Brushless Cordless Self-Propelled mower offers solid value at a lower price point and reliable self-propulsion, but the WORX edges ahead with higher user ratings and more versatile cutting adjustments.
Side-by-Side
| Feature | Greenworks 40V 21" | WORX Nitro 21" |
|---|---|---|
| Price | $399.99 | $429.99 |
| Power System | 40V brushless motor | Brushless motor (no voltage specified in title) |
| Cut Width | 21 inches | 21 inches |
| Self-Propelled | Yes | Yes (variable speed) |
| User Rating | 4.1/5 (1,527 reviews) | 4.4/5 (244 reviews) |
| Best Yard Size | Up to 1/3 acre | Up to 1/2 acre |
Where Greenworks Wins
Lower price. At $399.99, the Greenworks costs $30 less than the WORX, making it a more budget-friendly option for those who don’t need the extra features.
Proven track record. With over 1,500 reviews, the Greenworks has a larger sample size of user feedback, indicating consistent performance over time. Its 40V battery system is widely compatible with other Greenworks tools, which is a plus if you already own their equipment.
Adequate for smaller yards. For lawns up to 1/3 acre, the Greenworks self-propulsion provides sufficient power and runtime. The brushless motor ensures efficient energy use, and the 21-inch deck is standard for residential mowing.
Where WORX Wins
Higher user satisfaction. A 4.4/5 rating from 244 reviews suggests fewer reported issues and higher owner satisfaction compared to the Greenworks’ 4.1/5.
Variable speed control. The WORX Nitro’s variable speed self-propulsion is a significant advantage on slopes or thick grass. You can adjust the mower’s pace to match walking speed or terrain demands, reducing fatigue and improving cut quality.
Better for larger yards. The WORX is recommended for up to 1/2 acre, giving it more capacity than the Greenworks. This is likely due to more efficient battery management or a higher-capacity battery (though battery amp-hours aren’t listed in the title).
Superior cutting adjustments. WORX typically offers more deck height options and a wider range of adjustments, allowing finer control over grass length.
Which Should You Buy
Choose the Greenworks if: You’re on a strict budget, have a yard under 1/3 acre, or already own Greenworks 40V tools and want battery compatibility. The lower price and large review base make it a safe, proven choice for smaller, flatter lawns.
Choose the WORX Nitro if: You have a yard up to 1/2 acre, deal with slopes or uneven ground, or want the flexibility of variable speed self-propulsion. The higher user rating and better suitability for larger lots justify the extra $30. For most homeowners, the WORX offers a better overall experience and more room to grow if your yard size increases.