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PowerSmart Self Propelled Gas Lawn Mower 21-inch vs WORX Nitro 21" Cordless Lawn Mower, Electric Mower

Updated July 2026 — PowerSmart Self Propelled Gas Lawn Mower 21-inch wins on weight and speed, WORX Nitro 21" Cordless Lawn Mower, Electric Mower wins on battery and cutting heights.

The PowerSmart mower offers a lower price and solid performance, while the WORX mower excels in technology and convenience.

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

Price

PowerSmart is $20 cheaper.

Weight

PowerSmart is lighter at 54 lbs.

Simplicity

PowerSmart has a straightforward design.

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

Power

WORX has a more powerful brushless motor.

Runtime

WORX offers longer battery runtime.

Technology

WORX features aerodeck technology.

Overall score

PowerSmart Self Propelled Gas Lawn Mower 21-inch
75
WORX Nitro 21" Cordless Lawn Mower, Electric Mower
82

Specifications

SpecPowerSmart Self Propelled Gas Lawn Mower 21-inchWORX Nitro 21" Cordless Lawn Mower, Electric Mower
Engine TypeGasCordless
Sales Rank93094191
Mowing Options3-in-13-in-1
Adjustable Height6 positions7 positions
Self-PropelledYesYes

Dimension comparison

PowerSmart Self Propelled Gas Lawn Mower 21-inchWORX Nitro 21" Cordless Lawn Mower, Electric Mower

Overview of the PowerSmart Self Propelled Gas Lawn Mower

The PowerSmart Self Propelled Gas Lawn Mower is priced at $339.99, making it a competitive option for homeowners looking for a reliable gas mower. This model is particularly suited for small to medium yards, featuring a 170cc 4-cycle OHV engine that enhances cutting efficiency. With a sales rank of 9309, this mower is designed for durability and ease of use, boasting a 21-inch steel deck that allows for effective mowing in various conditions.

The mower’s self-propelled rear-wheel-drive system offers excellent traction, especially on inclines, and operates at a single speed of 3.5 to 4.1 km/h. Additionally, it includes a 3-in-1 functionality, allowing you to mulch, side-discharge, or rear-bag clippings, which adds versatility to your mowing experience. With six height adjustment positions ranging from 1.5 to 3.9 inches, it caters to different mowing preferences and grass types.

Overview of the WORX Nitro 21" Cordless Lawn Mower

The WORX Nitro 21" Cordless Lawn Mower, priced at $359.99, is designed for efficiency and ease of use, particularly for yards up to half an acre. This model features advanced aerodeck technology that prevents clogs and enhances cutting quality. With a sales rank of 4191, the WORX mower is notable for its powerful brushless motor 2.0, which delivers 40% more power and 10% longer runtime than previous models.

A standout feature of the WORX mower is its self-propelled capability with variable speed, allowing users to set their desired pace up to 3.7 MPH. It also offers 3-in-1 functionality for mulching, bagging, and side-discharging. The mower includes two 20V 5.0Ah PowerShare Pro batteries for extended runtime, and its fully collapsible handle allows for convenient storage.

Performance Comparison

The PowerSmart mower, with its 170cc gas engine, is designed for robust performance in varied terrains, especially on slopes where its rear-wheel-drive system excels. Its cutting efficiency is enhanced by a durable steel deck and a sharp mulching blade, making it effective for mowing even in challenging conditions.

In contrast, the WORX Nitro mower leverages its brushless motor technology to provide superior power and runtime, making it a formidable competitor in the cordless mower category. The aerodeck design significantly boosts air volume, preventing clogs and ensuring a cleaner cut. While the PowerSmart mower has a fixed speed, the variable speed feature of the WORX allows for a more tailored mowing experience, adapting to different grass densities more efficiently.

Versatility in Functionality

Both mowers feature versatile mowing options, but they take different approaches. The PowerSmart's 3-in-1 capabilities—mulching, side-discharge, and rear-bagging—allow for flexibility based on the user’s lawn care needs. This model also provides six adjustable heights, ensuring it can accommodate various grass types and conditions.

The WORX Nitro mower also offers 3-in-1 functionality and excels with its quick-switching modes between mulching, bagging, and side-discharging. Its single-lever height adjustment allows for quick changes between seven positions ranging from 1.5 to 4 inches, providing additional customization for lawn care. This feature is particularly beneficial for users who prefer to mow at different heights throughout the growing season.

Ease of Use and Maintenance

When it comes to ease of use, the PowerSmart mower offers a straightforward design that appeals to those who may not be as familiar with complex machinery. Its foldable design enables significant storage space savings, making it easier to store when not in use. This model’s recoil starter and auto choke system also simplify the starting process.

The WORX Nitro mower, on the other hand, benefits from its cordless design, eliminating the hassle of gas and oil maintenance. The included batteries are interchangeable with over 140 other WORX tools, adding to the convenience for users who own multiple tools from the brand. Additionally, the onboard charge-level indicator provides real-time updates on battery life, which is a valuable feature for users who want to ensure they have enough power to complete their mowing tasks.

Price Comparison

The PowerSmart mower is available for $339.99, making it about 17% cheaper than the WORX Nitro mower, which is priced at $359.99. This price difference may be a significant consideration for budget-conscious consumers looking for effective lawn care solutions without sacrificing quality. While both mowers offer excellent features, the lower price of the PowerSmart model may appeal to those who prioritize cost-effectiveness.

However, it is essential to consider that the slightly higher price of the WORX mower comes with advanced technology and added convenience, such as the brushless motor and battery compatibility with other tools. This investment may be worthwhile for consumers seeking enhanced performance and versatility.

Customer Reception and Sales Rank

The PowerSmart mower holds a sales rank of 9309, indicating a respectable level of popularity among consumers. Its combination of performance, price, and features appeals to many homeowners, particularly those with smaller yards.

In contrast, the WORX Nitro mower has a better sales rank of 4191, suggesting it is a favored choice for those looking for a battery-powered option. The advanced features, such as aerodeck technology and variable speed control, have likely contributed to its higher ranking, attracting users who prioritize innovation and efficiency in lawn care.

Which should you buy?

Ultimately, the choice between the PowerSmart Self Propelled Gas Lawn Mower and the WORX Nitro Cordless Lawn Mower depends on your specific needs and preferences. If you prioritize a lower upfront cost and a reliable gas mower for a small to medium yard, the PowerSmart is a solid choice. However, if you seek advanced technology, ease of use, and the benefits of a cordless electric model, the WORX Nitro may justify its higher price. Each model has its strengths, so consider your lawn size, terrain, and maintenance preferences before making a decision.