A 21 inch lawn mower is the size that fits 80 percent of suburban yards. The deck is wide enough to cut a 10,000 square foot lawn in 45 minutes, the chassis is light enough that one person can wheel it onto a truck bed, and it fits through almost every side gate without taking the handle off. After comparing 18 current 21 inch mowers across gas, battery, push, and self-propelled categories, these seven came out ahead. The lineup covers the homeowner switching from gas to battery, the buyer with a slope, the small-yard owner who wants the simplest possible mower, and the gas holdout who still cuts an acre.
Quick comparison
| Mower | Power | Drive | Deck material | Battery / runtime |
|---|---|---|---|---|
| Toro Recycler 60V 21466 | 60V battery | Self-propelled rear | Steel | 6 Ah, 60 min |
| EGO Power+ LM2156SP | 56V battery | Self-propelled rear | Steel | 7.5 Ah, 65 min |
| Honda HRX217VKA | 200cc gas | Self-propelled rear | NeXite composite | n/a |
| Toro Recycler 21356 | 159cc Toro gas | Self-propelled rear | Steel | n/a |
| Greenworks Pro 80V GLM801601 | 80V battery | Push | Steel | 4 Ah, 55 min |
| Ryobi 40V RY401140 | 40V battery | Self-propelled front | Plastic / steel | 6 Ah, 50 min |
| Snapper XD 82V SXDWM82K | 82V battery | Self-propelled rear | Steel | 2 x 2 Ah, 45 min |
Toro Recycler 60V 21466, Best Overall
Toro put its 50-year-old Recycler deck design on a 60V battery platform and the result is the most balanced 21 inch mower on the market. The Recycler deck is what makes a Toro mulch well: a tapered chamber that holds clippings in longer for a second and third cut before they drop, so the cut grass is fine enough to disappear into the lawn within a day.
Rear-wheel drive with a self-pace handle, a 6 Ah battery good for about 60 minutes on a medium lawn, and the steel deck that has been the standard for the brand for decades. The 60V platform shares batteries with Toro’s string trimmer and snow blower, so the second-tool buy is just a bare unit. Charging time on the 6 Ah pack is around 90 minutes.
Trade-off: the 21466 is heavier than the EGO at around 75 pounds with battery, and the runtime drops sharply on tall grass. For a typical maintained lawn this is fine; for a yard that goes three weeks between cuts in spring, plan for a spare battery.
EGO Power+ LM2156SP, Best Battery Platform
EGO built the largest battery tool platform in the consumer market and the LM2156SP is the mower that justifies the ecosystem choice. The 56V battery slots into 70-plus EGO tools including blowers, trimmers, chainsaws, and pressure washers, which makes the lineup the right call for a buyer planning to replace several gas tools over a few seasons.
Rear-wheel drive, steel deck, self-propel speed dial on the handle, and the brand’s signature LED headlights for evening cuts. The 7.5 Ah battery in the kit covers about 65 minutes of medium-grass cutting and recharges in 60 minutes on the rapid charger.
Trade-off: EGO’s mulching is good but not Toro Recycler good, particularly on damp grass. The cut is acceptable for a maintained lawn and the platform-wide battery sharing is the long-term win.
Honda HRX217VKA, Best Gas
The Honda HRX217 is the last gas 21 inch mower most experts would still buy new in 2026. The NeXite composite deck does not rust, the GCV200 engine is the most reliable consumer mower engine ever made, and the variable-speed Smart Drive handle is the standard the battery mowers are still chasing.
Roto-Stop blade brake clutch lets the user stop the blade without stopping the engine, which means no restart for emptying the bag or moving an obstacle. The mulching and bagging quality on the twin-blade MicroCut system is the highest in the gas category, especially on damp or thick grass.
Trade-off: this is the priciest mower on the list, and the buyer pays a real premium for the Honda name. Gas means oil, gas storage, and a pull-start. If the lifetime cost is acceptable and the lawn is over 15,000 square feet, the HRX earns the spot.
Toro Recycler 21356, Best Gas Value
The 21356 is the gas-engine counterpart to the 21466 above. Same Recycler deck, same self-propelled rear-wheel drive, with a 159cc Toro-branded engine that costs less than the Honda and starts on the first or second pull for most of its life.
Personal pace drive bar adjusts the speed by how hard the user pushes the handle forward, which is the most intuitive self-propel system in the category. Mulching quality matches the battery 21466 because the deck is the same.
Trade-off: the engine is sourced from a third-party builder, which is cheaper but less long-lived than the Honda GCV. Expect 8 to 10 years of reliable starts with annual maintenance rather than 15.
Greenworks Pro 80V GLM801601, Best Push Mower
For a flat yard under 5,000 square feet, the Greenworks Pro 80V push mower delivers the cut quality of the more expensive self-propelled picks at a real discount. Push is the right choice when the user wants the lightest, simplest possible mower and does not need drive assistance.
Steel deck, 80V brushless motor that handles thick grass without bogging down, and a 4 Ah battery that covers about 55 minutes. The folding handle stores compact, the side discharge is excellent for a one-off cut on tall grass, and the bag attaches and detaches in seconds.
Trade-off: push only, which is a real workout on a 5,000 square foot yard. The 80V battery platform is smaller than EGO or Ryobi, so the future tool buys are more limited.
Ryobi 40V RY401140, Best Budget Battery
Ryobi’s 40V platform is the budget battery brand for homeowners who already own one or two Ryobi tools. The RY401140 self-propelled mower delivers acceptable cut quality, decent runtime, and the lowest price in the self-propelled battery category.
Front-wheel drive (lighter and cheaper than rear-wheel), 6 Ah battery for about 50 minutes of run time, and the same battery powers 80-plus Ryobi 40V tools. The deck is partly plastic over a steel core, which keeps the weight under 65 pounds.
Trade-off: front-wheel drive struggles on slopes because the front lifts when pushing uphill. Cut quality is good but not Toro Recycler good. For a budget that needs a self-propelled battery mower, this is the answer.
Snapper XD 82V SXDWM82K, Best for Sloped Yards
The Snapper XD is the mower to buy for a yard with real slope. The 82V rear-wheel-drive system uses larger rear wheels (11 inches) for better grip on hills, the variable speed control is set on the handle, and the dual-battery system runs two 2 Ah packs in series for full 82V power.
Steel deck, 21 inch cut, three-in-one mulch-bag-discharge, and a folding handle for storage. On a 20-degree slope the rear-wheel drive holds traction noticeably better than the front-wheel competitors.
Trade-off: the two-battery system means two batteries to charge and two batteries to replace at end of life. The 82V platform has the fewest companion tools of the battery brands on this list.
How to choose
Lawn size sets the power source
Under 5,000 square feet: push battery mower. 5,000 to 15,000 square feet: self-propelled battery. 15,000 to 30,000 square feet: self-propelled gas, or self-propelled battery with a spare pack. Over 30,000 square feet: gas, or step up to a 30 inch deck.
Slope sets the drive type
Flat yard: front-wheel drive or push. Any slope over 10 degrees: rear-wheel drive. Severe slope over 20 degrees: rear-wheel drive with a high-traction tire, like the Snapper XD.
Deck width vs gate width
Measure the side gate before buying. A 21 inch mower needs about 24 to 26 inches of gate clearance counting the wheels. If the gate is under 30 inches, a 21 inch is the safe choice; 22 inch decks often will not fit.
Mulch by default
A 3-in-1 mower set to mulch returns clippings to the lawn and reduces fertilizer needs. Bag only when the grass is over one-third too tall (the one-third rule) or in fall for leaf cleanup. Side-discharge for the first cut after a vacation when the grass is shoulder-high.
For related yard work, see our guide on push vs self-propelled mower decision and the breakdown in battery vs gas mower for half-acre yards. For details on how we evaluate outdoor power equipment, see our methodology.
The 21 inch class is the right answer for most suburban yards in 2026. The Toro 60V 21466 is the safest all-around pick, the EGO LM2156SP is the platform play, and the Honda HRX217 is still the gas mower to buy if gas is staying.
Frequently asked questions
Why is 21 inches the most common mower size?+
Twenty-one inches is the deck width that balances cut speed against maneuverability for the average suburban yard. A 20 inch mower covers slightly less ground per pass; a 22 inch mower struggles to fit through standard side gates (most are 36 inches wide and the mower needs handle clearance). For yards between 3,000 and 20,000 square feet, 21 inches finishes in a reasonable time and stores in a standard garage without trimming the handles.
Battery or gas for a 21 inch mower in 2026?+
Battery has caught up for most homeowners. A 60V or 80V mower with a 5 Ah pack runs 45 to 60 minutes, which covers a 10,000 square foot yard with margin. The exhaust, oil changes, gas storage, and pull-start headaches go away. Gas still wins for yards over half an acre, for slopes that drain batteries fast, and for buyers who already own a gas string trimmer and want to keep one fuel source. For a quarter-acre flat yard, battery is the simpler choice.
Self-propelled or push mower on a 21 inch deck?+
Push if the yard is flat and under 5,000 square feet. Self-propelled if there is any slope, the lawn is over 5,000 square feet, or the user wants to mow more often. A 21 inch self-propelled mower weighs around 70 to 90 pounds and the drive system makes the difference between a workout and a routine chore. Front-wheel drive is the lighter, cheaper option for flat ground; rear-wheel drive holds traction better on hills and around obstacles.
Should the mower mulch, bag, or side-discharge?+
Most 21 inch mowers ship as 3-in-1 machines that do all three. Mulch is the default for a healthy lawn: returning clippings to the soil cuts fertilizer use by 20 to 30 percent and keeps moisture in during summer. Bag for the first cut of spring and the last cut of fall when clippings are heavy. Side-discharge only for very tall grass on a one-off cut. Set the deck to one-third of the grass height per cut and mulch always.
How long should a 21 inch mower last?+
A gas mower with annual oil changes, blade sharpening twice a season, and a clean undercarriage lasts 10 to 15 years. A battery mower lasts as long as the battery: the motor and deck go 10 plus years, the battery pack drops to 70 percent capacity at year 5 to 7 and needs replacement around year 8. Plan to replace the battery once during the life of a battery mower and the total cost still beats gas if the buyer values not dealing with gas at all.
Priya Sharma
Priya Sharma writes for The Tested Hub.