Best Gas Self-Propelled Lawn Mowers Compared – 2026

SENIX 22" Self-Propelled Gas – Best Gas Lawn Mower Self-Propelled

Overview The SENIX 22" is a self-propelled gas lawn mower with a wide 22-inch deck and rear-wheel drive. SENIX is the established outdoor-power brand here, and this is the gas lawn mower self-propelled pick that covers mid-to-large yards without you pushing.

For anyone searching "gas lawn mower self-propelled," this is the sweet spot — a 22-inch deck cuts more per pass than the typical 20-21", rear-wheel drive pulls itself up inclines, and the SENIX 4-cycle engine starts reliably without mixing oil and gas. It mulches, bags and side-discharges, so you adapt to the season without swapping decks.

It is heavier than a push mower and needs the usual gas-engine maintenance (oil, air filter, spark plug). But as a do-everything gas lawn mower for a real yard, the SENIX 22" is the pick most buyers should start with.

Pros

• Wide 22" deck — fewer passes

• Self-propelled rear-wheel drive for inclines

• 3-in-1 mulch, bag, side-discharge

• Established SENIX brand with reliable 4-cycle start

Cons

• Heavier than a push mower

• Gas-engine maintenance required

Best for Mid-to-large yards that need a self-propelled gas lawn mower that does everything.

PowerSmart EasyDrive 21" 170cc 3-in-1 – Best Self-Propelled Value

Overview The PowerSmart EasyDrive is a 21-inch self-propelled gas lawn mower with a torquey 170cc engine and 3-in-1 cutting. A strong-value gas lawn mower self-propelled pick that undercuts premium brands while still pulling itself across the yard.

The 170cc engine is the standout — more displacement than most 21" mowers in this price band, which means it powers through thick or damp grass without bogging down. EasyDrive self-propulsion takes the effort out of the job, and the 3-in-1 deck handles mulching, bagging and side discharge.

PowerSmart sits below SENIX in long-term brand pedigree, but the price-to-power ratio is the best here. For buyers who want a self-propelled gas lawn mower with real torque without paying premium-brand pricing, it is the value standout.

Pros

• Torquey 170cc engine powers through thick grass

• Self-propelled EasyDrive transmission

• 3-in-1 mulch, bag, side-discharge

• Best price-to-power ratio in the comparison

Cons

• Brand pedigree below SENIX

• No electric start

Best for Value buyers who want a torquey self-propelled gas lawn mower without premium pricing.

SENIX 20" 144cc Push Gas – Best Compact Gas Lawn Mower

Overview The SENIX 20" 144cc is a compact push gas lawn mower with a 4-cycle engine — lighter and more maneuverable than self-propelled units. The right gas lawn mower for small-to-medium flat yards where a big self-propelled deck is overkill.

Not every yard needs a heavy self-propelled mower. The SENIX 20" 144cc is a compact push gas lawn mower — lighter, easier to turn around tight beds and store in a small shed, with the same reliable SENIX 4-cycle engine that starts without fuss. For flat small-to-medium lawns it is the most practical, least-bulky gas lawn mower.

It is a push mower, so larger or hilly yards will want the self-propelled picks above. But for the compact-yard job, it nails the balance of power, weight and price, and it ships with an active offer through October.

Pros

• Compact, lightweight, easy to maneuver and store

• Reliable SENIX 4-cycle engine

• 20" deck right-sized for small-medium yards

• Active offer through 2026-10-31

Cons

• Push, not self-propelled — not for hills

• Narrower deck means more passes on bigger lawns

Best for Small-to-medium flat yards that want a compact, easy-to-handle gas lawn mower.

AMERISUN 144cc 21" 2-in-1 Gas – Best Value Gas Lawn Mower

Overview The AMERISUN 144cc is a 21-inch 2-in-1 gas lawn mower (mulch and side-discharge) at the lowest price in this comparison. The budget gas lawn mower pick for buyers who want a dependable engine without paying for extra features.

This is the budget door into gas mowing — a 21-inch deck (wider than the compact SENIX), a 144cc 4-cycle engine and 2-in-1 mulch/side-discharge cutting at a price that undercuts everything else here. For a straightforward gas lawn mower that just cuts grass reliably, AMERISUN covers the essentials.

It is a push mower with 2-in-1 (no bagging) and a newer brand, so long-term support is less proven. But for buyers who want the lowest-cost real gas lawn mower with a full-size deck, it earns its slot, and it ships with an active offer through August.

Pros

• Lowest price in the comparison

• Full-size 21" deck

• 144cc 4-cycle engine, 2-in-1 mulch/side-discharge

• Active offer through 2026-08-15

Cons

• Push only and no bagging mode

• Newer brand — less support track record

Best for Budget buyers who want a dependable full-size gas lawn mower at the lowest price.