Gas vs Electric Lawn Mower: Which Should You Buy?
For most homeowners a battery electric mower is now the better buy, since it is quiet, clean, low maintenance and starts at a button. Choose a gas mower if you have a large or rough lawn, mow for long stretches, or need more power and run time than a battery can reliably give.
The gas versus electric question shapes how a mower feels to own long before you think about brands or decks. One is a small engine you fuel, service and store like any garden tool, the other is a quiet appliance you charge and forget. Neither is simply better, they suit different lawns.
This comparison weighs power, run time, noise, maintenance and cost so you can match the machine to your yard. If you want help with the rest of the spec sheet, our guide on how to choose a lawn mower covers cutting width, drive and grass handling, and our roundup of the best lawn mowers shows how these trade offs play out across real machines.
The short version
Battery electric mowers win on convenience, quiet running and easy upkeep. Gas mowers win on raw power, long run time and coping with big or rough lawns. Here is the quick split:
- Choose electric if: you have a small to medium lawn, want a quiet, clean, push button machine, and would rather skip fuel and servicing.
- Choose gas if: you have a large or overgrown lawn, mow for long stretches, or need power and run time that a battery cannot always match.
Power and cutting performance
Gas mowers still lead on sustained power, especially in tall, thick or damp grass where the engine holds its cutting speed under load. On a large or neglected lawn, that steady grunt clears the job without bogging down.
Battery mowers have closed the gap for normal use. A good cordless model cuts a tidy, healthy lawn easily, and the best handle longer grass well, though very heavy growth can slow them. For the average, regularly mown lawn, the difference in the finish is small, and both leave a clean cut when the blade is sharp.
Run time versus refuelling
This is where the real trade off lives. A gas mower runs as long as there is fuel in the tank, and a splash more has you going again in seconds, which is why gas remains popular for large properties and long sessions.
A battery mower runs until the pack is empty, typically enough for a small or medium lawn on one charge. You can buy a spare battery to double your range, but recharging takes time, so on a big lawn you plan around it. Be honest about the size of your lawn and how long it takes, since this single factor decides more disappointments than any other.
Noise, fumes and where you mow
Electric mowers are quiet enough to use early on a weekend without troubling the street, and they produce no exhaust, so there are no fumes to breathe as you follow the machine up and down.
Gas engines are loud, and they give off exhaust, so they must only be run outdoors in open air, never in a garage or shed. Ear protection is sensible with a gas mower, and you should refuel a cool engine outside, away from any flame or spark. For many people the quiet, fume free running of electric settles the decision on its own, particularly where neighbours are close.
Maintenance and running costs
Electric mowers pull clearly ahead on upkeep. There is no oil, no air filter, no spark plug and no fuel, just the blade to keep sharp and the deck to keep clean. Running costs are low, since charging a battery is cheap.
Gas mowers cost more to keep, needing oil changes, filters, plugs, fuel and the occasional carburettor clean, all of which we walk through in our guide to lawn mower maintenance. That extra care also means more that can go wrong, as our list of common lawn mower problems shows, where stale fuel and dirty filters top the list.
Which should you buy?
For most modern homes with a small or medium lawn, a battery electric mower is the easier machine to live with. It starts every time, stays quiet and clean, and asks almost nothing of you between cuts. Add a spare battery and it covers a surprisingly large lawn.
Choose gas if your lawn is large, rough or often left to grow long, or if you mow for hours and cannot wait on a charge. Some people even keep a small electric mower for tidy weekly cuts and a gas machine for the heavy jobs. For more help matching a mower to your yard, see how to choose a lawn mower or browse our Outdoors & Garden guides.
Ready to pick one?
Whichever way you are leaning, our top picks include strong gas and battery mowers with the trade offs laid out clearly.
Frequently asked questions
Are electric lawn mowers powerful enough?
For a regularly mown small or medium lawn, yes. A good battery mower cuts a healthy lawn cleanly and handles moderately long grass well. Gas still pulls ahead in tall, thick or damp growth on large lawns, where sustained power under load saves real time.
How long does a battery mower run on one charge?
It varies with the model and grass, but one charge typically covers a small to medium lawn. A spare battery roughly doubles your range, which is the usual answer for a larger lawn, since recharging takes time and cannot match a quick splash of fuel.
Do gas mowers cut better than electric?
They cut faster and cope better with heavy, overgrown grass thanks to sustained power, not because the finish is somehow cleaner. On a normal, regularly cut lawn a sharp electric mower leaves an equally tidy result, just a little slower in the toughest growth.
Can I use a gas mower in a garage?
No. Gas engines give off exhaust fumes and must only be run outdoors in open air. Running one in a garage or shed is dangerous. Refuel a cool engine outside, away from any flame. Electric mowers, which produce no fumes, are the safe choice for enclosed spaces.
Which is cheaper to own?
Electric is usually cheaper to run and maintain, with no fuel, oil, filters or plugs, just cheap charging and a blade to keep sharp. Gas costs more over time, which is only worth it if you need its power and run time on a large or rough lawn.
Do professionals use gas or electric mowers?
Many pros still use gas for the power and quick refuelling on large jobs, though battery machines are gaining ground fast. For a typical home lawn, a battery mower covers nearly everything with far less noise, fumes and upkeep than a gas machine.