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Greenworks 80V 21” Brushless Cordless Electric vs SENIX 22" Self-Propelled Gas Lawn Mower, Gas

Updated July 2026 — Greenworks 80V 21” Brushless Cordless Electric wins on battery and height, SENIX 22" Self-Propelled Gas Lawn Mower, Gas wins on weight and width.

The Greenworks mower offers a complete lawn care kit with additional tools, while the SENIX provides strong performance at a lower price. Choose based on your specific needs.

Why Greenworks 80V 21” Brushless Cordless Electric is better

Complete Kit

Includes blower and trimmer

Warranty

4-year warranty vs 2-year

Maintenance

Lower maintenance with electric design

Why SENIX 22" Self-Propelled Gas Lawn Mower, Gas is better

Price

Cheaper by 17%

Power

170cc engine for tough grass

Cutting Width

22-inch blade for faster mowing

Overall score

Greenworks 80V 21” Brushless Cordless Electric
85
SENIX 22" Self-Propelled Gas Lawn Mower, Gas
75

Specifications

SpecGreenworks 80V 21” Brushless Cordless ElectricSENIX 22" Self-Propelled Gas Lawn Mower, Gas
Motor TypeBrushlessGas
Power80V170cc
Cutting System3-in-13-in-1
Start TypePush ButtonFirst Pull
Warranty4 Years2 Years

Dimension comparison

Greenworks 80V 21” Brushless Cordless ElectricSENIX 22" Self-Propelled Gas Lawn Mower, Gas

Price Comparison

The Greenworks 80V 21” Brushless is priced at $499.99, while the SENIX 22" Self-Propelled Gas Lawn Mower comes in at $415.65. This makes the SENIX model about 17% cheaper than the Greenworks mower. With the Greenworks package, you receive not just the mower but also a 500 CFM axial leaf blower and a 13” string trimmer, adding significant value to the purchase. The SENIX, however, focuses solely on lawn mowing and does not include additional tools, which could be a consideration for those looking for a complete yard maintenance solution.

Power and Performance

In terms of power, the Greenworks 80V model features an 80V brushless motor, designed for efficient and reliable performance. On the other hand, the SENIX mower is equipped with a 170cc OHV engine, which delivers 3.8 HP and is noted for its first-pull starting capability. While the Greenworks model capitalizes on electric power for quiet operation, the SENIX’s gas engine is suited for tackling thick, wet grass without stalling. If you prioritize a powerful gas engine for more demanding mowing conditions, the SENIX might be the better option.

Cutting Features

The Greenworks mower offers a versatile 3-in-1 system for mulching, rear bagging, and side discharge, allowing for various lawn care preferences. It features a 21-inch steel deck and adjustable height settings, providing flexibility for different grass types and lengths. Conversely, the SENIX boasts a larger 22-inch manganese steel blade, which is designed for efficiency and fuel savings, enabling the mower to cover up to 9/20 of an acre on just 0.8L of gas. Both mowers excel in cutting features, but the SENIX’s larger blade may result in faster mowing times, especially for larger yards.

Convenience and Usability

The Greenworks mower emphasizes convenience with its hand-push design, LED lights for low-light conditions, and a vertical storage capability. It also includes two 2Ah batteries and a rapid charger, making it user-friendly and easily rechargeable. In contrast, the SENIX features a rear-wheel drive system that enhances maneuverability, particularly on slopes, and 11-inch wheels designed to roll over roots and bumps effortlessly. While both mowers have user-friendly features, the Greenworks model provides the convenience of cordless operation, which can be a significant advantage for users who prefer a quieter mowing experience.

Durability and Build Quality

The Greenworks mower is built with a steel deck and is backed by a comprehensive 4-year warranty, suggesting a commitment to durability. The SENIX, however, features a high-strength steel deck, designed to withstand tough conditions, and is backed by a 2-year warranty. While both offer robust construction, the Greenworks may provide more peace of mind with its longer warranty period. If durability is a primary concern, both models offer solid build quality, but the differences in warranty length could influence your decision.

Maintenance and Care

Maintenance for the Greenworks mower is generally simpler due to its electric design, requiring less frequent upkeep compared to gas-powered models. The SENIX, with its gas engine, requires regular maintenance such as oil changes and filter replacements. The Greenworks model's cordless nature eliminates the hassle of dealing with fuel and oil, making it an attractive option for those seeking a low-maintenance solution. However, for users comfortable with gas mowers, the SENIX's design allows for straightforward upkeep with minimal tools.

Additional Features

The Greenworks mower comes as part of a comprehensive kit, including a blower and string trimmer, making it a versatile option for complete lawn care. It also features a user-friendly variable speed trigger on the trimmer, providing precise control. The SENIX model lacks additional tools but includes innovative features like a vortex tunnel deck that prevents clogging and stalling. This unique design helps maintain cutting efficiency, particularly in challenging mowing conditions. The Greenworks kit may appeal more to those seeking a full lawn maintenance package, while the SENIX focuses on delivering an efficient mowing experience.

Which should you buy?

Choosing between the Greenworks 80V 21” Brushless and the SENIX 22" Self-Propelled Gas Lawn Mower depends largely on your specific needs. If you are looking for a complete lawn maintenance kit that includes additional tools and a quieter, low-maintenance solution, the Greenworks model is the better choice despite its higher price. Conversely, if you prioritize power, efficiency, and a lower initial investment, the SENIX mower offers strong performance and value with its robust gas engine and larger cutting blade. Ultimately, your decision should reflect your lawn care priorities, budget, and preferences for maintenance.