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Greenworks 80V 21” Brushless Cordless Electric vs PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Updated July 2026 — Greenworks 80V 21” Brushless Cordless Electric wins on battery life and warranty, PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn wins on noise level and weight.

The Greenworks 80V mower offers more versatility and lower maintenance, while the PowerSmart provides reliable performance at a lower price.

Why Greenworks 80V 21” Brushless Cordless Electric is better

Versatility

Includes blower and string trimmer

Maintenance

Electric mower requires less upkeep

Warranty

4-year warranty for peace of mind

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

Price

More affordable at $297.49

Power

170cc engine for tough jobs

Maneuverability

Self-propelled feature for easier handling

Overall score

Greenworks 80V 21” Brushless Cordless Electric
85
PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
75

Specifications

SpecGreenworks 80V 21” Brushless Cordless ElectricPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
Motor TypeBrushlessOHV
Power SourceElectricGas
Cutting Modes3-in-13-in-1
Self-PropelledNoYes
Battery IncludedYesNo

Dimension comparison

Greenworks 80V 21” Brushless Cordless ElectricPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Overview of the Greenworks 80V 21” Brushless and PowerSmart 21-Inch Mower

The Greenworks 80V 21” Brushless is a versatile electric lawn mower combo that includes a blower and a string trimmer, while the PowerSmart 21-Inch 3-in-1 Gas Mower is a robust, self-propelled mower powered by a gas engine. Priced at $499.99, the Greenworks model is significantly more expensive than the PowerSmart, which is available for $297.49, making it about 40% cheaper. This price difference reflects the additional tools included with the Greenworks package, but potential buyers may need to evaluate whether these extras justify the higher cost.

Performance Comparison

In terms of performance, the Greenworks mower features an 80V brushless motor that promises efficient and reliable operation, while the PowerSmart is equipped with a 170cc OHV engine known for its smooth start-up and consistent performance. The Greenworks model is designed for a quieter, less maintenance-intensive experience typical of electric mowers, yet the PowerSmart's gas engine may offer more power for tougher mowing jobs. Both mowers have a 21-inch cutting width, allowing them to efficiently cover a significant area in a single pass, suitable for medium to large yards.

Cutting Versatility

The Greenworks 80V mower offers a 3-in-1 system that includes mulching, rear bagging, and side discharge options, giving users flexibility in lawn care. This model also boasts a 7-position height adjustment feature to cater to various grass lengths and preferences. In contrast, the PowerSmart also provides a 3-in-1 function with bagging, mulching, and rear discharge capabilities, along with six cutting heights ranging from 1.5 inches to 3.9 inches. While both mowers offer similar versatility, the Greenworks provides an additional height option, which may appeal to users looking for more customization in their lawn care.

Ease of Use

The Greenworks 80V lawn mower is designed for user convenience, featuring a hand-push design, LED lights for visibility in low-light conditions, and a vertical storage option. It also includes two 2Ah USB batteries and a rapid charger, promoting hassle-free cordless operation. On the other hand, the PowerSmart mower's self-propelled feature with rear-wheel drive and large 10-inch rear wheels enhances maneuverability, especially on slopes and uneven terrain, which may be a key advantage for users with challenging yard layouts.

Maintenance Requirements

Maintenance plays a crucial role when selecting a lawn mower. The Greenworks 80V, being electric, typically requires less upkeep than gas-powered models like the PowerSmart. The absence of gas and oil changes simplifies the maintenance routine for the Greenworks mower. Conversely, the PowerSmart mower may require more attention, including engine maintenance and fuel management. This difference could be a significant factor for buyers looking for low-maintenance options.

Warranty and Support

The Greenworks 80V lawn mower comes with a generous 4-year warranty, ensuring peace of mind for users regarding product durability and reliability. In contrast, the PowerSmart mower's warranty details are not specified in the provided information, which may lead to uncertainty about the long-term support and service available for the gas mower. A longer warranty can often indicate a manufacturer's confidence in their product, which may sway buyers in favor of the Greenworks model.

Environmental Impact

When considering environmental impact, the Greenworks 80V mower stands out due to its electric operation, producing zero emissions during use. This feature aligns with growing consumer preferences for eco-friendly products. The PowerSmart, being gas-powered, does emit pollutants, which could be a concern for environmentally conscious consumers. The choice between these two models may hinge on personal values regarding sustainability and environmental responsibility.

Which should you buy?

Ultimately, the decision between the Greenworks 80V 21” Brushless and the PowerSmart 21-Inch 3-in-1 Gas Mower depends on individual needs and preferences. The Greenworks model offers a more comprehensive package with additional tools, excellent warranty coverage, and lower maintenance requirements, making it suitable for those who prioritize convenience and eco-friendliness. However, the PowerSmart mower presents a cost-effective option with reliable performance and self-propelled features, appealing to users who may prioritize power and maneuverability. Depending on budget and specific lawn care needs, either mower could be the right choice for you.