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MZK 20V 13" Electric Lawn Mower, Brushless vs WORX Nitro 21" Cordless Lawn Mower, Electric Mower

Updated July 2026 — WORX Nitro 21" Cordless Lawn Mower, Electric Mower leads on weight and runtime.

The MZK 20V is a budget-friendly option for smaller yards, while the WORX Nitro offers advanced features for larger lawns.

Why MZK 20V 13" Electric Lawn Mower, Brushless is better

Price

MZK is significantly cheaper at $149.99.

Weight

MZK is lighter at 24.3 pounds.

Simplicity

MZK has an intuitive two-step activation for easy startup.

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

Cutting Width

WORX has a wider 21-inch cutting path.

Power

WORX's brushless motor 2.0 delivers 40% more power.

Runtime

WORX offers a longer runtime of up to 50 minutes.

Overall score

MZK 20V 13" Electric Lawn Mower, Brushless
75
WORX Nitro 21" Cordless Lawn Mower, Electric Mower
85

Specifications

SpecMZK 20V 13" Electric Lawn Mower, BrushlessWORX Nitro 21" Cordless Lawn Mower, Electric Mower
Motor TypeBrushlessBrushless 2.0
Self-PropelledNoYes
Cutting Heights47
Battery Count2 x 4Ah2 x 5Ah
Price$149.99$359.99

Dimension comparison

MZK 20V 13" Electric Lawn Mower, BrushlessWORX Nitro 21" Cordless Lawn Mower, Electric Mower

Overview of the MZK 20V 13" Electric Lawn Mower and WORX Nitro 21" Cordless Lawn Mower

The MZK 20V 13" Electric Lawn Mower is priced at $149.99, while the WORX Nitro 21" Cordless Lawn Mower is significantly more expensive at $359.99, making the MZK model about 58% cheaper. Both mowers offer unique features that cater to different lawn care needs. The MZK is ideal for smaller yards with its lightweight design and efficient brushless motor, while the WORX Nitro is engineered for larger lawns, providing self-propelled operation and advanced cutting technology.

Cutting Performance

When it comes to cutting performance, the WORX Nitro stands out with its 21-inch cutting width compared to the MZK's narrower 13-inch deck. This wider cutting path allows the WORX Nitro to cover more ground with each pass, making it suitable for larger lawns. Additionally, the WORX features Aerodeck technology that optimizes airflow within the cutting deck to enhance cut quality and efficiency, reducing clumping and ensuring a clean finish. In contrast, the MZK mower, while efficient for small to medium yards, may require more passes due to its smaller cutting width.

Motor and Power

The MZK mower is equipped with a powerful brushless motor designed for optimal performance and efficiency, especially with its dual 4Ah batteries that enhance runtime. Meanwhile, the WORX Nitro boasts a brushless motor 2.0 that delivers 40% more power and a 10% longer runtime compared to first-generation models, ensuring it can tackle tougher grass conditions. This motor is coupled with two 5.0 Ah batteries, providing a max no-load runtime of 50 minutes, making it particularly well-suited for lawns up to ½ acre.

Weight and Maneuverability

Weighing in at just 24.3 pounds, the MZK 20V lawn mower is notably lighter than the WORX Nitro, making it easier to maneuver and transport. This feature is particularly beneficial for homeowners who may struggle with heavier equipment. The lightweight design reduces strain during use, making mowing less cumbersome. On the other hand, the WORX Nitro, while heavier, compensates with its self-propelled feature, allowing users to guide the mower effortlessly at a comfortable speed, which can be a significant advantage on inclines or uneven terrain.

Adjustability and Customization

Customization in cutting height is a strong point for both mowers. The MZK offers four adjustable cutting heights ranging from 1.2 inches to 1.5 inches, allowing users to tailor their mowing experience to different grass types and seasonal needs. Conversely, the WORX Nitro features a more versatile seven-position lever for adjusting cutting heights between 1.5 inches and 4 inches. This broader range provides greater flexibility for achieving the desired lawn appearance, making the WORX Nitro potentially more suitable for varied lawn conditions.

Battery and Runtime

Battery performance is crucial in cordless lawn mowers, and both models come with powerful battery options. The MZK includes two 4Ah batteries, while the WORX Nitro comes with two larger 5.0 Ah batteries. This difference means the WORX Nitro can sustain longer mowing sessions, achieving a runtime of up to 50 minutes, ideal for larger lawns. Moreover, the WORX's PowerShare technology allows users to interchange batteries with over 140 other WORX tools, adding to its versatility. The MZK's batteries, while efficient, do not offer the same level of compatibility with other tools.

User Experience and Safety Features

User experience is enhanced in both mowers through thoughtful design features. The MZK's intuitive two-step activation process ensures a safe start, preventing accidental engagement. This makes it user-friendly, particularly for those new to lawn care. The WORX Nitro, with its self-propelled function and variable speed control, allows for a more relaxed mowing experience, especially on slopes. Users can set their preferred speed up to 3.7 MPH, making it easier to navigate larger lawns without excessive physical effort.

Which should you buy?

Deciding between the MZK 20V 13" Electric Lawn Mower and the WORX Nitro 21" Cordless Lawn Mower largely depends on the size and type of your lawn. If you have a smaller yard and prioritize lightweight, affordable options, the MZK is a compelling choice at $149.99. However, for larger lawns or those needing advanced features like self-propulsion and superior cutting technology, the WORX Nitro, despite its higher price of $359.99, offers enhanced performance and versatility. Ultimately, your specific lawn care needs and budget will determine the best fit for you.