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Greenworks 40V 16" Cordless Lawn Mower vs PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Updated July 2026 — Greenworks 40V 16" Cordless Lawn Mower wins on runtime and battery, PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn wins on weight and noise level.

The Greenworks mower excels in eco-friendliness and maintenance, while the PowerSmart offers superior cutting performance and versatility.

Why Greenworks 40V 16" Cordless Lawn Mower is better

Eco-Friendliness

Operates without emissions

Maintenance

Zero maintenance required

Weight

35% lighter than gas mowers

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

Cutting Width

21-inch cutting deck

Power

170cc OHV engine

Versatility

3-in-1 function for lawn care

Overall score

Greenworks 40V 16" Cordless Lawn Mower
85
PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
78

Specifications

SpecGreenworks 40V 16" Cordless Lawn MowerPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
Engine TypeElectricGas
Cutting Heights5 positions6 positions
Self-PropelledNoYes
Warranty3 years2 years
Battery IncludedYesNo

Dimension comparison

Greenworks 40V 16" Cordless Lawn MowerPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Overview of the Greenworks 40V 16" Cordless Lawn Mower

The Greenworks 40V 16" Cordless Lawn Mower is designed for homeowners looking for a lightweight and eco-friendly lawn care solution. Priced at $279.99, this mower offers a gas-free experience with the performance of a traditional gas mower. It features a 16-inch cutting deck and is suitable for small to medium lawns up to 1/3 acre. With a sales rank of 813, it is a popular choice among consumers.

This model boasts a 4.0Ah battery that provides about 40 minutes of runtime on a full charge, allowing for efficient mowing without the hassle of gas or oil. The ergonomic design and push-button start facilitate easy operation, making it an excellent option for users who prioritize comfort and convenience. Additionally, the Greenworks mower is compatible with over 75 other Greenworks 40V tools, expanding its value for existing customers.

Overview of the PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn Mower

The PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn Mower retails for $297.49, making it a slightly pricier option compared to the Greenworks model. With a robust 170cc OHV engine, this mower is built for performance and durability, particularly suited for medium to large yards. It holds a sales rank of 7264, indicating a solid but less dominant presence in the market.

One significant advantage of this mower is its 21-inch cutting width, which allows users to cover more ground in less time. It features a versatile 3-in-1 function that includes bagging, mulching, and rear discharge capabilities, making it adaptable to various lawn care needs. Additionally, the self-propelled design and rear-wheel drive improve maneuverability, especially on slopes or uneven terrain.

Cutting Performance

When it comes to cutting performance, the PowerSmart mower edges out the Greenworks model with its 21-inch cutting width. This wider deck allows for greater efficiency, reducing the time spent mowing. The Greenworks mower, with its 16-inch deck, is ideal for smaller spaces but may require more passes on larger lawns.

The PowerSmart mower also offers six cutting heights ranging from 1.5 inches to 3.9 inches, allowing for more precise lawn care based on grass type and season. In contrast, the Greenworks mower features a 5-position height control that adjusts between 1.25 inches and 3.375 inches. While the Greenworks mower is sufficient for many users, those with larger or more varied lawns may appreciate the versatility of the PowerSmart mower's cutting options.

Maintenance and Convenience

The Greenworks 40V mower shines in terms of maintenance and convenience, providing a zero-maintenance experience. Users can forget about gas, oil changes, and tune-ups, saving an estimated $200 or more annually compared to gas mowers. Its lightweight design (35% lighter than typical gas mowers) and quiet operation (under 75dB) make it ideal for early or late mowing sessions without disturbing neighbors.

On the other hand, the PowerSmart mower, while powerful, requires the typical maintenance associated with gas engines. Users must account for oil changes and gas refills, potentially increasing long-term operating costs. However, the self-propelled feature of the PowerSmart mower can make mowing less physically demanding, offering a different type of convenience for larger properties.

Price Comparison

In terms of pricing, the Greenworks 40V mower is the more economical choice at $279.99, while the PowerSmart mower is priced at $297.49, making it about 6% more expensive. Despite the price difference, the PowerSmart mower offers a wider cutting deck and a powerful gas engine, which may justify the additional cost for some users. However, for those looking for a cost-effective, eco-friendly solution, the Greenworks mower's lower price and zero-maintenance benefits make it a compelling option.

Eco-Friendliness and Noise Level

For environmentally-conscious consumers, the Greenworks 40V mower is the clear winner. It operates without gas or oil, meaning no emissions and a significantly lower environmental impact. The quiet operation allows for mowing at any time without disturbing the peace in residential areas, making it an attractive choice for urban dwellers.

Conversely, the PowerSmart mower, while reliable, does produce emissions and operates at a higher noise level typically associated with gas engines. This could be a deterrent for those prioritizing sustainability or living in noise-sensitive areas. The Greenworks model embodies the trend towards greener lawn care solutions, appealing to a growing demographic concerned about environmental issues.

User Experience and Comfort

User experience varies significantly between these two models. The Greenworks mower’s lightweight design and push-button start make it exceptionally user-friendly, particularly for those who may struggle with the physical demands of traditional mowers. The compatibility with over 75 other Greenworks tools enhances its appeal for customers already invested in the brand’s ecosystem.

In contrast, the PowerSmart mower's self-propelled capability provides an easier mowing experience for larger yards or uneven terrain. However, it may require more effort to start and maintain compared to the hassle-free operation of the Greenworks model. Ultimately, the choice may depend on individual preferences regarding comfort, ease of use, and existing tool compatibility.

Which should you buy?

Choosing between the Greenworks 40V 16" Cordless Lawn Mower and the PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn Mower largely depends on your specific lawn care needs and preferences. If you prioritize eco-friendliness, ease of maintenance, and a lightweight design, the Greenworks mower, priced at $279.99, is the better choice. It offers a hassle-free experience for smaller lawns and is compatible with a wide range of tools.

However, if you have a larger yard and seek a powerful gas mower with versatile cutting options, the PowerSmart mower may be worth the extra cost at $297.49. Its robust engine and wider cutting deck can handle tougher jobs, making it suitable for those who need a more heavy-duty solution. Consider your lawn size, maintenance preferences, and environmental impact when making your decision.