AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with vs MZK 20V 13" Electric Lawn Mower, Brushless
Updated July 2026 — AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with wins on power and weight, MZK 20V 13" Electric Lawn Mower, Brushless wins on battery.
The AMERISUN offers more power and cutting width, while the MZK is lighter and more convenient. Choose based on your yard size and maintenance preference.
Why AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with is better
Cutting Width
AMERISUN has a 21-inch cutting deck compared to MZK's 13 inches.
Power Source
AMERISUN's gas engine provides stronger performance for tougher grass.
Height Adjustment
AMERISUN offers six height settings versus MZK's four.
Why MZK 20V 13" Electric Lawn Mower, Brushless is better
Weight
MZK is significantly lighter at 24.3 pounds compared to AMERISUN's 68 pounds.
Price
MZK is priced at $149.99, making it more affordable.
Maintenance
MZK requires less maintenance with its electric motor.
Overall score
Specifications
| Spec | AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with | MZK 20V 13" Electric Lawn Mower, Brushless |
|---|---|---|
| Engine Type | Gas | Electric |
| Cutting Options | 3-in-1 | Standard |
| Runtime | N/A | Extended |
| Height Adjustments | 6 | 4 |
| Price | $238.49 | $149.99 |
Dimension comparison
Overview of the AMERISUN 21-Inch Gas Lawn Mower
The AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower is a robust option for homeowners seeking a powerful solution for yard care. Priced at $238.49, it features a 144cc 4-stroke OHV engine that provides strong cutting power, making it ideal for small to medium-sized yards. The mower's 21-inch rust-resistant steel deck ensures durability, while its 3-in-1 functionality—mulching, bagging, and side discharge—offers versatility for various lawn care needs. Weighing 68 pounds, it is designed for easy maneuverability, making it a solid choice for regular yard maintenance.
Overview of the MZK 20V Electric Lawn Mower
In contrast, the MZK 20V 13" Electric Lawn Mower is a lightweight and cordless alternative priced at $149.99, making it about 37% cheaper than the AMERISUN model. This mower uses a powerful brushless motor paired with 4Ah batteries, providing extended runtime for efficient lawn care. With a cutting width of 13 inches and four adjustable cutting heights, it accommodates various grass types and seasonal needs. At just 24.3 pounds, the MZK mower is extremely easy to handle, making it appealing for users of all ages.
Engine and Power Source Comparison
When it comes to power, the AMERISUN gas mower boasts a 144cc engine that delivers strong performance. This type of engine is typically favored for its consistent power and ability to handle tougher grass and uneven terrain. On the other hand, the MZK lawn mower features an advanced brushless motor that enhances efficiency and reduces maintenance requirements. While the AMERISUN requires gas, the MZK runs on batteries, which can be more convenient for those wanting to avoid fuel purchases and emissions.
Cutting Width and Deck Size
The AMERISUN mower stands out with its 21-inch cutting deck, designed to cover more ground quickly and efficiently. This is significantly wider than the MZK's 13-inch cutting width, allowing the AMERISUN to finish mowing tasks in fewer passes. However, the MZK's smaller size makes it easier to navigate tighter spaces and around obstacles in the yard. The choice between a wider deck for speed versus a smaller deck for maneuverability will depend on individual lawn care needs and yard layout.
Height Adjustment Features
Height adjustment is crucial for achieving the perfect cut, and both mowers offer this feature but in different capacities. The AMERISUN has a six-position cutting height adjustment, ranging from 1.5 inches to 3.9 inches, allowing for a more tailored mowing experience. In contrast, the MZK features four adjustable heights between 1.2 and 1.5 inches. While the MZK provides sufficient options for most seasonal needs, the AMERISUN allows for more versatility in managing different grass lengths and types.
Weight and Maneuverability
Maneuverability can significantly affect user experience, and this is where the MZK excels. At just 24.3 pounds, it is considerably lighter than the AMERISUN, which weighs 68 pounds. This lightweight design makes the MZK easier to push and transport, especially for users who may struggle with heavier equipment. The AMERISUN, while more robust and capable of handling tougher mowing tasks, may require more effort to maneuver across the yard, particularly on inclines or uneven terrain.
Maintenance and Convenience
One of the key advantages of the MZK mower is its low maintenance requirements. The brushless motor minimizes upkeep, and the electric power source means no need for regular oil changes or fuel purchases. In contrast, the AMERISUN gas mower, while powerful, may require more frequent maintenance, including fuel management and potential engine care. This difference can be a significant factor for homeowners looking for convenience and ease of use in their lawn care routine.
Which should you buy?
Choosing between the AMERISUN 21-Inch Gas Lawn Mower and the MZK 20V Electric Lawn Mower ultimately depends on your specific lawn care needs and preferences. If you have a medium to larger yard that requires robust cutting power and versatility, the AMERISUN might be the better choice despite its higher price. However, for those looking for a lightweight, cost-effective solution for smaller lawns, the MZK offers excellent performance at a significantly lower price. Consider the size of your yard, the type of grass you have, and your preference for maintenance when making your decision.

