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PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn vs WORX Nitro 21" Cordless Lawn Mower, Brushless

Updated July 2026 — PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn wins on power and weight, WORX Nitro 21" Cordless Lawn Mower, Brushless wins on price and battery life.

The PowerSmart mower offers a reliable gas engine at a lower price, while the WORX Nitro provides advanced technology and quieter operation.

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

Lower Price

PowerSmart is $297.49 compared to WORX's $379.99.

Gas Engine

PowerSmart uses a gas engine, eliminating battery concerns.

Self-Propelled

PowerSmart is self-propelled, aiding maneuverability.

Why WORX Nitro 21" Cordless Lawn Mower, Brushless is better

Better Runtime

WORX offers a runtime of 50 minutes on battery.

Advanced Technology

WORX features Aerodeck and Intellicut technology.

Quieter Operation

WORX operates with less noise compared to gas mowers.

Overall score

PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
75
WORX Nitro 21" Cordless Lawn Mower, Brushless
82

Specifications

SpecPowerSmart 21-Inch 3-in-1 Gas Self-Propelled LawnWORX Nitro 21" Cordless Lawn Mower, Brushless
Engine TypeGasElectric
Self-PropelledYesNo
Height Adjustment6 Positions7 Positions
Functionality3-in-13-in-1
Sales Rank72644856

Dimension comparison

PowerSmart 21-Inch 3-in-1 Gas Self-Propelled LawnWORX Nitro 21" Cordless Lawn Mower, Brushless

Overview of the Lawn Mowers

In the world of lawn care, choosing the right mower can significantly impact your maintenance routine. The PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn Mower retails at $297.49, making it about 17% cheaper than the WORX Nitro 21" Cordless Lawn Mower, which is priced at $379.99. While both mowers offer excellent features, they cater to different preferences and needs.

Power Source and Performance

The PowerSmart mower is powered by a reliable 170cc OHV engine, which is designed for smooth start-ups and consistent performance, ideal for tackling tough mowing jobs. On the other hand, the WORX Nitro is equipped with a brushless motor that delivers 40% more power and 10% longer runtime compared to earlier models. This electric mower is particularly suited for lawns up to half an acre, making it a good choice for homeowners who prefer battery-operated solutions that minimize noise and emissions.

Cutting Width and Efficiency

Both mowers feature a cutting width of 21 inches, allowing them to cover a substantial area in a single pass. The PowerSmart mower boasts a robust steel deck that enhances durability, while the WORX Nitro incorporates Aerodeck technology, which optimizes airflow for improved cut quality and bag collection. This technology can reduce clogs and improve mowing efficiency, making the WORX model a strong contender for those seeking high performance.

Versatility in Functionality

When it comes to versatility, both mowers offer 3-in-1 functionality, allowing users to bag, mulch, or discharge clippings. The PowerSmart model features a 1.4-bushel bag for collecting clippings, making it easy to switch between modes. Conversely, the WORX Nitro allows users to easily change modes with the included mulch plug and discharge chute, providing greater flexibility for lawn care needs. This adaptability is crucial for homeowners who wish to customize their mowing experience.

Height Adjustment Features

Height adjustment is another important consideration. The PowerSmart mower offers a 6-position height adjustment ranging from 1.5 to 3.9 inches, allowing for quick modifications based on grass length and season. In comparison, the WORX Nitro features a 7-position height adjustment with a range from 1.5 to 4 inches. This additional height option gives users slightly more control over their lawn's appearance, which can be a deciding factor for those focused on aesthetics.

Maneuverability and Design

Maneuverability is essential for efficiently mowing lawns with obstacles. The PowerSmart mower is self-propelled with large rear wheels that provide excellent traction and ease of movement on slopes or uneven terrain. Meanwhile, the WORX Nitro features a fully collapsible handle for space-saving storage and adjustable handle height for comfort. While both mowers offer maneuverability, the self-propelling feature of the PowerSmart may appeal more to those with larger or hilly yards.

Battery Life and Runtime

Battery life is a crucial aspect of cordless mowers. The WORX Nitro operates on two 20V 5.0Ah PowerShare Pro batteries, providing a maximum runtime of about 50 minutes, which is suitable for mowing medium-sized lawns. In contrast, the PowerSmart mower does not rely on batteries, eliminating concerns about running out of power mid-mow. This aspect can be particularly appealing for users who prefer the reliability of a gas engine over the limitations of battery life.

Which should you buy?

Ultimately, the choice between the PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn Mower and the WORX Nitro 21" Cordless Lawn Mower boils down to personal preferences and specific lawn care needs. If you prioritize a lower initial cost and the reliability of a gas engine, the PowerSmart mower is a solid option. However, if you are looking for advanced technology, better runtime efficiency, and a quieter mowing experience, the WORX Nitro could be worth the additional investment. Consider your lawn size, terrain, and whether you prefer gas or electric power when making your decision.