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Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah vs PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Updated July 2026 — Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah wins on run time, PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn wins on engine size and weight.

The Greenworks 48V is a quieter, maintenance-free option, while the PowerSmart offers more power and cutting width for larger lawns.

Why Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah is better

Price

Greenworks is $22.58 cheaper.

Maintenance

Greenworks requires no gas or oil.

Weight

Greenworks is lighter and easier to maneuver.

Why PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn is better

Power

PowerSmart has a more powerful gas engine.

Cutting Width

PowerSmart has a 21-inch cutting width.

Versatility

PowerSmart offers a 3-in-1 cutting option.

Overall score

Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah
75
PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
85

Specifications

SpecGreenworks 48V 17" Cordless Lawn Mower , 4.0AhPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
Power SourceCordlessGas
MaintenanceLowHigh
Noise LevelLowHigh
Self-PropelledNoYes
Cutting Modes2-in-13-in-1

Dimension comparison

Greenworks 48V 17" Cordless Lawn Mower , 4.0AhPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Overview of Both Lawn Mowers

The Greenworks 48V and PowerSmart 21-Inch gas self-propelled lawn mowers represent two solid options for homeowners looking to maintain their lawns. The Greenworks 48V is priced at $274.91, while the PowerSmart model comes in at $297.49, making the Greenworks about 8% cheaper. This price difference may influence buyers who are looking for cost-effective solutions. Both mowers offer unique features tailored to different user preferences, from power sources to cutting techniques.

Power Source and Performance

The Greenworks 48V is a cordless mower powered by a 48V system that includes two 24V batteries, allowing for up to 45 minutes of run-time. This electric mower is designed for quiet operation and is virtually maintenance-free, eliminating the need for gas and oil. In contrast, the PowerSmart is equipped with a 170cc OHV gas engine, known for its robust performance on tougher mowing jobs. The reliability of the gas engine may appeal to those who prefer traditional power sources, especially for larger or more difficult lawns.

Cutting Width and Efficiency

When it comes to cutting efficiency, the PowerSmart offers a larger 21-inch cutting width, which can significantly reduce mowing time, especially for medium to large yards. The Greenworks 48V features a smaller 17-inch cutting width, which may require more passes on larger lawns. This difference in size could be crucial for users who want to maximize efficiency, as the PowerSmart's wider deck allows for quicker coverage of lawn areas.

Versatility in Lawn Care

Both mowers offer versatile cutting options, but they cater to different user needs. The Greenworks 48V provides a 2-in-1 system for mulching and rear bagging grass clippings, along with a single lever for height adjustment across five positions. On the other hand, the PowerSmart features a 3-in-1 design, which includes bagging, mulching, and rear discharge capabilities. This adds an extra layer of versatility, allowing users to switch between modes easily depending on lawn care needs.

Maneuverability and Handling

Maneuverability is an essential factor for any lawn mower. The Greenworks 48V is designed with a lightweight 17-inch poly deck, making it easier to push and navigate around obstacles. However, the PowerSmart's self-propelled feature, combined with its 10-inch large rear wheels, provides excellent traction and ease of handling on slopes or uneven terrain. This feature can be particularly advantageous for users with hilly yards or challenging landscapes.

Maintenance Requirements

The Greenworks 48V stands out for its maintenance-free operation. With no gas, oil, or emissions, this mower requires minimal upkeep, making it an attractive option for eco-conscious consumers or those who prefer low-maintenance equipment. In contrast, the PowerSmart requires more regular maintenance due to its gas engine, including oil changes and fuel management. This distinction can influence buyers' choices based on their willingness to invest time in mower upkeep.

Sound and Vibration Levels

The Greenworks 48V operates quietly, which is a significant advantage for those who live in noise-sensitive neighborhoods. Its electric design means less vibration and noise during operation, allowing for a more pleasant mowing experience. Conversely, the PowerSmart may produce more noise and vibration due to its gas engine, which could be a consideration for users who prioritize a quieter operation.

Which should you buy?

Choosing between the Greenworks 48V and PowerSmart 21-Inch lawn mowers ultimately depends on your specific lawn care needs and preferences. If you value a quieter, maintenance-free, and cost-effective option for smaller yards, the Greenworks 48V is an excellent choice at $274.91. However, if you need a mower that can handle larger areas efficiently with a powerful gas engine and versatile cutting options, the PowerSmart at $297.49 may be worth the investment. Consider your lawn size, terrain, and maintenance preferences to make the best decision for your yard.