AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc vs Greenworks 40V 17" Cordless Lawn Mower – Brushless
Updated July 2026 — AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc wins on weight and cutting width, Greenworks 40V 17" Cordless Lawn Mower – Brushless wins on runtime and battery.
The AMERISUN offers more power and versatility, while the Greenworks provides convenience and lower maintenance. Choose based on your priorities.
Why AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc is better
Power
AMERISUN has a 144cc engine for better cutting performance.
Versatility
AMERISUN features 3-in-1 functionality including side discharge.
Price
AMERISUN is priced lower at $238.49.
Why Greenworks 40V 17" Cordless Lawn Mower – Brushless is better
Noise
Greenworks operates 30% quieter than gas mowers.
Maintenance
Greenworks requires no oil changes or gas.
Convenience
Greenworks has a push-button start for easy operation.
Overall score
Specifications
| Spec | AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc | Greenworks 40V 17" Cordless Lawn Mower – Brushless |
|---|---|---|
| Engine Type | Gas | Cordless |
| Cutting Options | 3-in-1 | 2-in-1 |
| Warranty | 1 year | 3 years |
| Noise Level | Higher | Lower |
| Start Type | Pull Cord | Push Button |
Dimension comparison
Overview of the AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower
The AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower is designed for small to medium-sized lawns, offering a reliable 144cc 4-cycle OHV engine. Priced at $238.49, this gas-powered mower highlights a blend of efficiency and durability with features like a 21-inch steel cutting deck and a 6-position height adjustment. Its versatility allows for mulching, bagging, and side discharge, making it suitable for various mowing conditions. With a bestseller rank of 8653, it appeals to those seeking a robust option for their lawn care needs.
Overview of the Greenworks 40V 17" Cordless Lawn Mower
The Greenworks 40V 17" Cordless Lawn Mower offers a convenient alternative to gas mowers, priced at $279.99. It features a powerful brushless motor that provides up to 35 minutes of runtime on a single charge. This mower is designed for ease of use, boasting a push-button start and a quieter operation—30% less noise than gas mowers. With a bestseller rank of 5110, it caters to homeowners looking for a user-friendly and low-maintenance lawn care solution.
Performance Comparison
In terms of performance, the AMERISUN mower provides a traditional gas-powered experience with a robust 144cc engine, making it effective for thick grass and larger lawns. The Greenworks mower, however, leverages its brushless motor to deliver a quieter, maintenance-free operation that is increasingly popular among eco-conscious consumers. While the AMERISUN offers a wider cutting path of 21 inches, the Greenworks has a slightly smaller 17-inch deck but compensates with its cordless convenience. This performance distinction caters to different user preferences: those valuing raw power might lean towards the AMERISUN, while those seeking ease and quieter operation might prefer the Greenworks.
Versatility and Features
The AMERISUN mower excels with its 3-in-1 functionality, allowing users to mulch, bag, or side discharge clippings, thus providing versatility in lawn care. This feature is especially beneficial for homeowners who desire a clean finish or natural fertilization. In contrast, the Greenworks mower also provides a 2-in-1 option to mulch or bag but lacks the side discharge capability. Both mowers offer adjustable cutting heights, with the AMERISUN featuring six settings compared to the Greenworks' six as well. However, the former's additional discharge option enhances its versatility, making it a more adaptable choice for various mowing tasks.
Ease of Use
When it comes to ease of use, the Greenworks mower stands out with its instant push-button start, eliminating the hassle of pull cords associated with gas mowers like the AMERISUN. Its lighter design, combined with a quieter brushless motor, makes it more user-friendly, especially for those who may find maneuvering a heavier mower challenging. Conversely, the AMERISUN, while slightly heavier at 68 lbs, offers a foldable handle for compact storage, which can be an advantage for those with limited space. Ultimately, the choice between these two mowers will depend on the user’s priority for convenience versus traditional mowing power.
Maintenance Requirements
Maintenance is a critical factor when considering lawn mowers. The AMERISUN requires regular upkeep typical of gas-powered machines, such as oil changes and spark plug replacements, which can be viewed as a drawback by some. In contrast, the Greenworks mower offers a significant advantage with its brushless motor, which requires no oil changes, has no fumes, and presents zero maintenance issues related to gas engines. This makes the Greenworks an appealing choice for those who prefer a hassle-free lawn care experience, especially over time as they assess long-term maintenance costs.
Price Comparison
The AMERISUN is priced at $238.49, making it about 15% cheaper than the Greenworks, which retails for $279.99. This price difference may appeal to budget-conscious buyers who are looking for a reliable gas mower without breaking the bank. However, the Greenworks’ higher price reflects its advanced technology and convenience features, such as cordless operation and reduced noise levels. Buyers need to weigh the cost against the features that best fit their lawn care needs.
Customer Satisfaction and Reviews
Customer satisfaction is an important aspect of any product comparison. The AMERISUN, with a bestseller rank of 8653, resonates well with users who appreciate its performance and versatility. On the other hand, the Greenworks mower, ranked higher at 5110, suggests a strong preference for its ease of use and innovative design. Many reviews highlight the convenience of the cordless operation and the peace of mind that comes with lower maintenance needs. As such, customer feedback may significantly influence the decision between these two models.
Which should you buy?
Choosing between the AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower and the Greenworks 40V 17" Cordless Lawn Mower ultimately depends on your specific lawn care needs and preferences. If you prioritize a powerful, traditional gas mower with versatile cutting options and a lower price point, the AMERISUN may be the better choice. However, if you value convenience, quieter operation, and minimal maintenance, the Greenworks stands out as a strong contender despite its higher cost. Both mowers cater to different user profiles, ensuring that you can find a suitable option for your lawn care routine.

