AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with vs Greenworks 40V 16" Cordless Lawn Mower
Updated July 2026 — AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with wins on weight and deck size, Greenworks 40V 16" Cordless Lawn Mower wins on runtime.
The AMERISUN mower offers more power and versatility at a lower price, while the Greenworks mower excels in convenience and lower maintenance costs.
Why AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with is better
Price
AMERISUN is $41.50 cheaper.
Power
144cc gas engine vs 40V battery.
Versatility
3-in-1 mowing options vs 2-in-1.
Why Greenworks 40V 16" Cordless Lawn Mower is better
Weight
Greenworks is significantly lighter.
Maintenance
No gas or oil costs.
Eco-Friendly
Zero emissions operation.
Overall score
Specifications
| Spec | AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with | Greenworks 40V 16" Cordless Lawn Mower |
|---|---|---|
| Engine Type | Gas | Electric |
| Power | 144cc | 40V |
| Mowing Options | 3-in-1 | 2-in-1 |
| Warranty | N/A | 3 years |
| Noise Level | Louder | Quiet |
Dimension comparison
Overview of the AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower
The AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower is a robust and versatile option for homeowners. Priced at $238.49, it features a powerful 144cc 4-stroke OHV engine that provides strong cutting power suitable for small to medium yards. One of its key highlights is the 21-inch rust-resistant steel deck, which is designed to handle tough grass while ensuring durability. The mower offers a 3-in-1 mowing system allowing for mulching, bagging, and side discharge, making it easy to maintain a tidy lawn. With a lightweight design of 68 lbs, it promotes easy maneuverability and storage.
Overview of the Greenworks 40V 16" Cordless Lawn Mower
The Greenworks 40V 16" Cordless Lawn Mower stands out for its eco-friendly design and convenience. Available for $279.99, it operates on a 40V battery that provides up to 40 minutes of runtime, making it ideal for lawns up to 1/3 acre. This mower boasts an ultra-lightweight design, weighing significantly less than its gas counterpart, and features a 16-inch cutting deck for comfortable handling. The mower’s smart cut adjustment system enables easy height adjustments, while the 2-in-1 mulching and rear-bagging system allows for effective grass management. Additionally, it comes with a battery and charger, enhancing its value proposition.
Performance Comparison
When it comes to performance, the AMERISUN mower is powered by a gas engine, providing consistent power without the need for battery management. The 144cc engine allows for efficient cutting in various grass conditions, making it suitable for diverse lawn types. In contrast, the Greenworks mower, while offering a gas-free operation, relies on a 40V battery that lasts 40 minutes on a full charge. This means users must consider battery management and charging times, which can be a limitation for larger lawns. Therefore, if you prioritize uninterrupted mowing, the AMERISUN might be the better choice, while the Greenworks offers a quieter, maintenance-free operation.
Ease of Use and Maneuverability
The AMERISUN mower weighs 68 lbs, making it relatively easy to push and maneuver, especially with its 7” and 10” durable wheels. The adjustable cutting height from 1.5” to 3.9” allows users to customize the mower for different grass heights and conditions, ensuring a professional-looking cut. The Greenworks mower, on the other hand, is designed to be even lighter, 35% lighter than comparable models, making it easier to handle, especially for those who may struggle with heavier machines. Its ergonomic handles and push-button start enhance user comfort and convenience during operation. For ease of use, particularly for those with physical limitations, the Greenworks mower may have an edge.
Maintenance and Operating Costs
Maintenance costs differ significantly between these two mowers. The AMERISUN gas mower requires traditional upkeep, such as oil changes and fuel purchases, which can add to the yearly cost of ownership. In contrast, the Greenworks mower eliminates these expenses, as it operates on a rechargeable battery, saving users an estimated $200 annually on fuel and maintenance compared to gas mowers. This makes the Greenworks a more economical choice over time, especially for users looking to minimize ongoing costs. Furthermore, the Greenworks mower has zero emissions, which contributes to a more environmentally friendly lawn care solution.
Versatility and Additional Features
The AMERISUN mower offers a versatile 3-in-1 mowing system with mulching, bagging, and side discharge options, making it suitable for various lawn care needs. This feature allows users to choose how they want to manage grass clippings, whether for nutrient recycling or keeping the yard tidy. In comparison, the Greenworks mower also includes a 2-in-1 mulching and rear-bagging system, though it lacks the side discharge option. While both models provide good clipping management, those who value extensive mowing options may prefer the versatility of the AMERISUN mower.
Price Comparison
The AMERISUN mower is priced at $238.49, which is approximately 15% cheaper than the Greenworks mower, which retails for $279.99. This price difference can be significant for budget-conscious consumers, making the AMERISUN a more attractive option for those seeking a robust gas mower without breaking the bank. However, it’s essential to weigh this cost against the potential savings on maintenance and operating costs with the Greenworks mower, which may justify its higher price for some buyers.
Which should you buy?
In determining which mower to purchase, consider your specific needs and preferences. The AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower is ideal for those seeking a powerful, versatile gas mower with multiple cutting options at a lower price point. Conversely, the Greenworks 40V 16" Cordless Lawn Mower offers the advantages of a lightweight design, eco-friendly operation, and lower maintenance costs, making it a great choice for environmentally conscious users. Ultimately, your decision will hinge on whether you prioritize power and versatility or convenience and sustainability.

