Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah vs PowerSmart Self Propelled Gas Lawn Mower 21-inch
Updated July 2026 — Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah wins on runtime and battery, PowerSmart Self Propelled Gas Lawn Mower 21-inch wins on engine and weight.
The Greenworks 48V offers a more economical and low-maintenance option, while the PowerSmart provides superior power for larger lawns.
Why Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah is better
Price
Greenworks is $65 cheaper than PowerSmart.
Maintenance
Greenworks is virtually maintenance-free.
Weight
Greenworks is lighter and easier to maneuver.
Why PowerSmart Self Propelled Gas Lawn Mower 21-inch is better
Power
PowerSmart has a 170cc engine for better performance.
Cutting Options
PowerSmart offers 3-in-1 functionality.
Durability
PowerSmart has a rugged steel deck.
Overall score
Specifications
| Spec | Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah | PowerSmart Self Propelled Gas Lawn Mower 21-inch |
|---|---|---|
| Power Source | Battery | Gas |
| Cutting Width | 17 inches | 21 inches |
| Maintenance | Low | High |
| Traction | None | Rear-Wheel |
| Noise Level | Low | High |
Dimension comparison
Price Comparison
When considering price, the Greenworks 48V is notably more economical at $274.91 compared to the PowerSmart Self Propelled Gas Lawn Mower, which retails for $339.99. This difference makes the Greenworks model about 19% cheaper than its gas-powered counterpart. For budget-conscious consumers, this price gap could be a significant factor in the decision-making process. Additionally, the Greenworks model includes two 4.0Ah batteries and a dual-port rapid charger, enhancing its value proposition, especially for those seeking a cordless solution without the need for additional purchases.
Performance and Power
In terms of performance, the PowerSmart model features a 170cc 4-cycle OHV engine, designed to deliver superior cutting efficiency and easy starts, which is ideal for tackling tougher mowing tasks. The Greenworks 48V, on the other hand, operates on two 24V batteries, providing a combined 48V power for up to 45 minutes of runtime. While the Greenworks is perfect for smaller yards, the PowerSmart's gas engine may be more suitable for larger or uneven terrains, as it is equipped with a rear-wheel-drive system that offers better traction. This distinction in power sources makes each model suitable for different user needs.
Design and Build Quality
The Greenworks 48V features a lightweight 17-inch poly deck, which enhances maneuverability and ease of use. Its design is particularly beneficial for those who may find a heavier mower cumbersome. In contrast, the PowerSmart boasts a rugged 21-inch steel deck that promises durability and longevity. This steel construction is advantageous for users looking for a mower that can withstand frequent use in a variety of conditions. The choice between a lightweight poly deck and a robust steel deck may influence buyers based on their mowing frequency and the complexity of their lawn.
Versatility in Cutting Options
Both mowers offer versatile cutting options, but they cater to different preferences. The Greenworks 48V provides a 2-in-1 system, allowing users to mulch or rear bag grass clippings, with a single lever for 5-position height adjustments. This feature can be particularly appealing for those who prioritize flexibility in lawn care. Conversely, the PowerSmart self-propelled mower offers a 3-in-1 functionality—mulching, side discharge, and rear bagging. This additional cutting option, coupled with its 6-position height adjustment, provides users with a broader range of mowing techniques, making it suitable for varying lawn conditions.
Maintenance Considerations
The maintenance aspect significantly differs between the two mowers. The Greenworks 48V is virtually maintenance-free, requiring no gas, oil, or emissions, which positions it as an environmentally friendly option. Its push-button start adds to the convenience, eliminating the hassle of traditional starting mechanisms. On the other hand, the PowerSmart requires regular maintenance associated with gas-powered engines, including oil changes and fuel management. This factor might deter those who prefer a low-maintenance lifestyle, making the Greenworks a more attractive option for busy homeowners.
Weight and Maneuverability
Weighing in at 54 lbs, the PowerSmart is heavier than the Greenworks 48V, which is designed for easy maneuverability due to its lightweight build. The weight difference means that the Greenworks may be easier to handle for individuals who need to navigate tight spaces or small yards. However, the self-propelled feature of the PowerSmart compensates for its weight, making it easier to operate on slopes and uneven terrain. Buyers should consider their physical capabilities and lawn layout when choosing between these two models.
User Experience and Handling
User experience is an essential factor in determining which mower to choose. The Greenworks 48V provides a quiet operation, which can be a significant advantage for users who live in noise-sensitive neighborhoods. Its collapsible handles also make it easy to store, saving space. Meanwhile, the PowerSmart’s self-propelled feature and adjustable speed offer a more user-friendly experience, particularly for those with larger lawns who may struggle with a push mower. This difference in handling and operation could influence the decision based on individual preferences and yard size.
Which should you buy?
Ultimately, the choice between the Greenworks 48V and the PowerSmart Self Propelled Gas Lawn Mower hinges on personal needs and preferences. If you prioritize cost-effectiveness, low maintenance, and a lightweight design for small to medium yards, the Greenworks 48V stands out as the better option at $274.91. However, if you have a larger or uneven lawn that requires more power and versatility, the PowerSmart, with its robust engine and additional cutting options, may be worth the $339.99 investment. Each mower has its strengths, making the decision a reflection of your specific lawn care requirements.

