10 Best Gas Lawn Mowers 2025 in the United States

The BILT HARD 21 Inch Self Propelled Gas Lawn Mower is a solid choice for homeowners needing an efficient and versatile mower for medium to large lawns. Its 201cc 4-stroke engine delivers reliable power with 9.0 ft·lb of torque, strong enough to handle typical grass cutting tasks without struggling. The 21-inch cutting width offers a good balance between maneuverability and coverage, helping you mow faster than smaller deck mowers. It features a self-propelled, rear-wheel drive system with a single speed, which makes pushing less tiring, especially on uneven or slightly sloped lawns.

The mower also supports three mowing options—bagging, mulching, and side discharge—giving you flexibility depending on how you want to manage clippings. Adjusting the cutting height is straightforward with one lever controlling all four wheels simultaneously, allowing you to set the grass height between 1.2 and 3.75 inches to suit different lawn conditions. Starting is hassle-free thanks to the no-choke, no-primer design, which means less fiddling before you can get going.

Weighing 79 pounds, it may be somewhat heavy if frequent carrying or compact storage is needed. Additionally, its single-speed self-propelled feature means it lacks speed options that some users might want for different terrains or preferences. This mower is well-suited for typical residential lawn care where ease of use and versatility are important, but it may not be ideal if more speed control or lighter weight is a priority.

The SENIX 20-Inch Gas Lawn Mower features a robust 125 cc 4-cycle Briggs & Stratton engine, which is reliable and efficient for small to medium-sized yards. The 20-inch cutting width ensures a generous cutting area, and the steel deck provides durability. The mower's 5-position single wheel height adjustment allows for flexibility in cutting height, ranging from 1.25 to 3.75 inches, which is suitable for various lawn conditions.

The side discharge is effective for dispersing grass clippings evenly, but it lacks mulching and bagging options which might be a drawback for some users seeking more versatility in grass management. Weighing 49 pounds, it is relatively lightweight and easy to maneuver, aided by its 7-inch wheels that perform well in tight spaces. The manual Prime n Pull starting mechanism is straightforward, but some users might prefer an electric start for added convenience.

The fold-down handle is a plus for easy storage, saving space when not in use. The mower comes with engine oil and is backed by a 2-year limited warranty, adding value and peace of mind for buyers. As a push mower, it requires physical effort to operate, which may be less appealing to those who prefer self-propelled options. Potential buyers should weigh the convenience of its features against the absence of mulching and bagging options and the manual start mechanism.

The PowerSmart 21-inch Gas Push Lawn Mower is a solid choice if you have a small to medium-sized lawn and want a reliable, easy-to-use mower. It features a 140cc Briggs and Stratton engine with a ReadyStart system, which means starting it should be hassle-free without pulling too hard or struggling. The 21-inch cutting width is a good middle ground—wide enough to cover ground efficiently but still manageable for maneuvering around obstacles.

This mower offers six cutting height options between 1.5 and 3.9 inches, allowing you to customize your lawn's length easily with a single lever. While it is a push mower, it does have a decent 1.4-bushel rear bag for collecting clippings, which helps keep your yard tidy and makes disposal easier. The sturdy steel deck and heavy-duty blade are designed for clean, fine cuts even on thicker grass, helping maintain a healthier lawn.

Since it’s not self-propelled, mowing larger or uneven areas may require more physical effort compared to models with propulsion. The engine and design suggest it’s suitable for routine residential use rather than very large properties. If you're looking for a mower that balances ease of start, good cutting performance, and practical features like mulching and bagging in a straightforward push design, this mower fits well. Heavier users or those with extensive lawns might find a self-propelled option easier to handle.