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Greenworks 40V 16" Cordless Lawn Mower vs PowerSmart Self Propelled Gas Lawn Mower 21-inch

Updated July 2026 — Greenworks 40V 16" Cordless Lawn Mower wins on noise level and runtime, PowerSmart Self Propelled Gas Lawn Mower 21-inch wins on weight and deck size.

The Greenworks mower offers a lightweight, low-maintenance option, while the PowerSmart provides more power for larger areas.

Why Greenworks 40V 16" Cordless Lawn Mower is better

Price

Greenworks is $60 cheaper than PowerSmart.

Weight

Greenworks is significantly lighter, making it easier to maneuver.

Maintenance

Greenworks requires zero maintenance compared to PowerSmart.

Why PowerSmart Self Propelled Gas Lawn Mower 21-inch is better

Cutting Deck

PowerSmart has a larger 21-inch cutting deck.

Power

PowerSmart's gas engine provides continuous operation.

Traction

PowerSmart's self-propelled system enhances traction on slopes.

Overall score

Greenworks 40V 16" Cordless Lawn Mower
85
PowerSmart Self Propelled Gas Lawn Mower 21-inch
75

Specifications

SpecGreenworks 40V 16" Cordless Lawn MowerPowerSmart Self Propelled Gas Lawn Mower 21-inch
Power SourceBatteryGas
Engine4.0Ah170cc
Cutting Options2-in-13-in-1
Start TypePush ButtonRecoil
Warranty3 Years1 Year

Dimension comparison

Greenworks 40V 16" Cordless Lawn MowerPowerSmart Self Propelled Gas Lawn Mower 21-inch

Overview of the Greenworks 40V 16" Cordless Lawn Mower and PowerSmart Self Propelled Gas Lawn Mower

When it comes to choosing a lawn mower, the Greenworks 40V 16" Cordless Lawn Mower and the PowerSmart Self Propelled Gas Lawn Mower present distinct advantages. The Greenworks model is priced at $279.99, making it about 17% cheaper than the PowerSmart, which is priced at $339.99. Both mowers cater to different user needs, focusing on power, efficiency, and ease of use.

Power Source Comparison

The Greenworks 40V lawn mower operates on a battery, while the PowerSmart lawn mower relies on a gas engine. The Greenworks features a 4.0Ah battery that offers up to 40 minutes of runtime, allowing for maintenance of small to medium lawns without the hassle of gasoline or oil. In contrast, the PowerSmart is equipped with a 170cc 4-cycle OHV engine designed for improved cutting efficiency. This gas engine allows for continuous operation without the need for recharging but comes with the downsides of emissions and regular maintenance.

Cutting Efficiency and Versatility

When it comes to cutting efficiency, the PowerSmart lawn mower boasts a 21-inch all-steel deck, which is larger than the 16-inch cutting deck of the Greenworks mower. This larger deck size enables the PowerSmart to cover more ground in a single pass, making it faster for larger areas. On the other hand, the Greenworks mower's 2-in-1 mulching and rear-bagging system provides flexibility, allowing users to manage clippings effectively. The Greenworks also features a smart cut adjustment system that adapts to various grass types, while the PowerSmart offers three cutting options, including mulching, side-discharge, and rear-bagging.

Weight and Maneuverability

The Greenworks mower is designed to be ultra-lightweight, weighing 35% less than comparable gas mowers. This makes it easier to maneuver, especially in tight spaces or uneven terrain. Conversely, the PowerSmart weighs 54 lbs, which can be more challenging to handle, particularly for those who prefer a lightweight option. The self-propelled rear-wheel drive system of the PowerSmart does enhance traction on inclined surfaces, making it suited for uneven terrains, whereas the Greenworks mower's lightweight nature allows for easier navigation across various yard layouts.

Maintenance and Operational Costs

One significant advantage of the Greenworks mower is its zero maintenance requirement. Users can avoid gas and oil costs, as well as engine tune-ups, leading to potential savings of over $200 annually compared to traditional gas mowers. With whisper-quiet operation at less than 75dB, it is also more neighbor-friendly. In contrast, the PowerSmart requires regular maintenance associated with gas engines, which can add to its long-term operational costs.

Storage and Portability

The Greenworks mower's lightweight design and compact build make it easier to store, especially for those with limited garage space. It comes with a foldable design that allows for straightforward storage without occupying much room. The PowerSmart, while foldable and designed to save about 70% of storage space, is inherently bulkier due to its larger size and weight. This could be a deciding factor for individuals who prioritize easy storage solutions.

User Experience and Comfort

User comfort is a prominent feature of the Greenworks mower, with ergonomic handles and a push-button start that simplifies operation. The lightweight design allows for effortless maneuvering, making it ideal for users with varying physical abilities. The PowerSmart, while offering a self-propelled system for easier handling, may not provide the same level of ease due to its weight. However, its adjustable mowing height and rear-wheel drive cater well to users who deal with uneven terrain.

Which should you buy?

Choosing between the Greenworks 40V 16" Cordless Lawn Mower and the PowerSmart Self Propelled Gas Lawn Mower ultimately depends on your individual needs and preferences. If you prioritize a lightweight, low-maintenance, and quiet operation, the Greenworks mower is a compelling choice at $279.99, especially for smaller to medium-sized lawns. Conversely, if you need a more powerful mower that can handle larger areas and uneven terrain, the PowerSmart, despite its higher price of $339.99, offers a robust gas engine and larger cutting deck. Assessing your yard size, terrain type, and maintenance willingness will guide you to the right decision.