Choosing a Lawn Mower: Petrol, Electric or Battery?

Which mower type actually fits your lawn?

The simplest way to narrow this down is to start with the lawn itself, not the engine. A small, open patch of grass right next to the house has very different requirements than a large, sloped rural property.

Treat the table as a starting point rather than a hard rule. A 700 m² lawn full of corners and flower beds can genuinely need more capacity than a lawn of the same size that's completely open. Shape matters as much as raw area.

Good to know. Battery mowers have gotten noticeably more powerful over the past few years. What they can realistically handle today is often higher than people assume, especially with models that support swappable or dual batteries.

Petrol mowers – power without a cord or a charger

Petrol engines generally deliver the most power for the money and handle tough conditions – long, thick or damp grass, slopes and uneven ground – better than most electric or battery alternatives. You're also never limited by cord length or battery life, which matters on large lawns where you're mowing continuously for a while.

The trade-off is maintenance and comfort. The engine needs regular servicing, oil, spark plugs and air filters, and it should be run dry or fitted with a fuel stabilizer before winter storage if it won't be used for months. Petrol mowers are also noisier and produce exhaust fumes while running, which makes them a poor fit for tightly packed neighborhoods with close neighbors.

If you go with petrol, look for a four-stroke engine rather than an older two-stroke design – most modern mowers are four-stroke by default, and they run cleaner and don't require mixing oil into the fuel.

Common mistake. Leaving fuel in the tank over winter without a stabilizer. Old fuel can cause hard starting and carburetor deposits the following season.

Corded electric mowers – cheapest for small lawns

A corded electric mower is usually the cheapest option to buy, weighs less than a petrol equivalent, and needs almost no maintenance – no oil, no spark plug, no fuel to store. You start it at the push of a button and skip the occasional starting problems that petrol engines can develop after sitting unused.

The obvious limitation is the cord. Your reach is defined by how many extension cords you're willing to chain together, and in practice the cord becomes impractical on lawns larger than what a 25-40 m (80-130 ft) cable comfortably covers, especially if the lawn has obstacles to mow around. You also have to keep track of where the cord is at all times, both for your own safety and to avoid running over it.

For a small, open lawn close to the house, a corded mower is hard to beat on price. It's a worse fit if the garden is long and narrow, has several separate patches of grass, or sits far from the nearest outlet.

Battery mowers – quiet and flexible

Battery mowers have gone from a niche product to the default choice for most home lawns within just a few years. They're quiet enough to use early in the morning or later in the evening without disturbing anyone nearby, need no fuel, and leave no cord to drag around.

The limiting factor is runtime. A typical battery mower runs for 30-45 minutes of continuous mowing per charge, which covers most home lawns but can mean a pause to recharge on larger or more complex ones. Many manufacturers sell swappable batteries you can change mid-job, or models with dual battery bays, which effectively removes the limitation for anyone willing to spend a bit more.

The battery is also the most expensive component and the one that loses capacity over time. Expect it to need replacing after a few seasons of use, especially if it's stored somewhere cold or left fully charged for long stretches. If you already own other battery tools from the same brand – a hedge trimmer or a strimmer, say – a shared battery platform can make a battery mower an even better financial fit.

Good to know. Store lithium-ion batteries somewhere cool and dry, ideally charged to around 40-60% if the mower will sit unused for a stretch, such as over winter. That protects battery lifespan far better than storing it fully charged or fully drained.

Reel mowers and scythes – the manual options

A push reel mower runs entirely on your own effort and, on the right lawn, produces a surprisingly clean cut. It works best on small, fairly flat lawns with finer grass and few weeds – long, coarse or uneven grass quickly turns reel mowing into hard, frustrating work.

The upsides are clear: no fuel, no electricity, no battery to charge or replace, and almost no maintenance beyond keeping the blades sharp. It's also the quietest option by a wide margin, which makes it a good fit for anyone mowing early on a Saturday without wanting to wake the neighborhood.

A more niche relative is the scythe, used to cut longer grass, meadow areas or hard-to-reach patches entirely by hand with no motor at all. It takes practice and a genuinely sharp blade to use well, but it's well suited to anyone establishing a wildflower meadow rather than a tight, formal lawn.

Is a robot mower worth considering instead?

For anyone who'd rather not mow at all, a robot mower is a fifth option worth weighing in – less a direct comparison with petrol, electric and battery models, and more an alternative category. The upfront cost is considerably higher, but the machine handles mowing automatically, often several times a week, which tends to produce a more even lawn over time.

Robot mowers need more setup before they get going, either a buried boundary wire or a wire-free navigation system, and none of them cut right up to the edges regardless of price. For a deeper look at what actually determines which robot mower fits your garden, see our robot mower buying guide.

What cutting width and height do you actually need?

Cutting width determines how much ground you cover per pass. A wider deck moves faster across a large, open lawn but becomes awkward to maneuver around beds, trees and narrow strips on a small, complex plot. Most home electric and battery mowers sit around 32-42 cm (13-17 in), while petrol mowers often offer 40-53 cm (16-21 in).

Cutting height matters just as much as width, but it's easy to overlook when buying. A mower with stepless or multi-position height adjustment lets you match the cut to the season – a slightly higher setting during dry spells protects the roots and keeps the lawn greener, while a lower height works fine when growth is strongest. For a deeper look at how cutting height and frequency affect a lawn's health across the season, see our complete lawn care guide.

Self-propelled or push – does it matter?

A self-propelled mower drives its own wheels, so you're steering and guiding rather than pushing the whole machine's weight forward. The difference is noticeable on sloped ground, on larger lawns where you're walking for a long stretch, or simply if you'd rather not strain your shoulders and back unnecessarily. Most petrol mowers above entry level are self-propelled, while among electric and battery models it's often an upgrade that adds to the price.

A push mower weighs less, is easier to turn and easier to lift over thresholds or steps, and typically costs less. On a small, flat lawn with no slopes, self-propelled drive rarely makes much difference – the benefit shows up once the area or the incline increases.

Good to know. Some self-propelled models offer adjustable speed, which is worth checking especially if you share mowing duties with someone who prefers a different pace, or if the lawn has sections with different slopes that call for different speeds.

Mulching, bagging or side discharge?

Most modern mowers handle at least two of the three main clipping methods: bagging, where clippings collect in a grass box; side discharge, where clippings scatter loosely across the lawn; and mulching, where clippings are finely chopped and dropped back down as natural fertilizer. Which method suits you best has more to do with how often you mow than with which drive type you choose.

Mulching works best if you mow often and only remove a small portion of blade length each time – the finely cut clippings break down quickly without smothering the grass beneath them. Bagging is the better choice if the lawn regularly gets long between mows, since a heavy layer of clippings otherwise mats down and chokes the grass underneath. Side discharge is the simplest option mechanically, but scattered clippings need raking up if the volume gets too heavy, especially on the first mow of spring.

Some mowers switch between methods by swapping an attachment or closing a flap, which adds flexibility if growth varies a lot between midsummer and early autumn.

Noise and neighbors – what the rules actually say

Petrol mowers are usually the loudest, followed by powerful electric and battery models, with reel mowers and scythes far and away the quietest. If you live close to neighbors – in a townhouse, a duplex, or a tightly built suburban street – it's worth checking the actual noise rating of the model you're considering rather than assuming "electric" automatically means quiet.

Many local authorities restrict when motorized mowing is allowed, often with tighter limits on evenings, early mornings and Sundays or public holidays. Rules vary a lot by location, so check what applies where you live rather than going by what the neighbors seem to do.

What does it actually cost over time?

The purchase price alone gives a misleading picture of what a mower actually costs over its lifetime. Petrol mowers have the lowest per-use fuel cost but need regular servicing, oil, and occasionally new spark plugs or air filters. Corded electric mowers have low running costs and almost no maintenance, though the electricity itself is a minor expense compared to the mower's price. Battery mowers have the lowest ongoing electricity cost, but the battery itself is a significant future expense once it eventually needs replacing.

Factor blade sharpening or replacement into the running cost regardless of drive type – a dull blade tears rather than cuts the grass, which gives a worse finish and makes the lawn more prone to fungal problems.

Cord and extension lead safety

If you go with a corded electric mower, always use an outdoor-rated extension cord designed for garden use, and run it through a ground-fault circuit interrupter (GFCI/RCD) if the outlet doesn't already have one built in. The GFCI cuts power quickly if the cord is damaged, which is the most common safety risk with corded mowers.

Common mistake. Mowing toward the direction the cord is lying, which increases the chance of running over it. Plan your mowing pattern so you're always moving away from the cord rather than across it.

Regardless of drive type, the same basic rules apply: wear sturdy shoes, clear stones, branches and toys from the lawn before starting, and always switch off the motor or remove the battery before clearing clogged grass or tipping the mower for cleaning.

Environmental impact – what really differs?

Small engines in garden equipment are relatively inefficient and produce more pollution per hour of use than people often expect, partly because they lack the emissions controls found in modern car engines. A well-maintained four-stroke engine runs cleaner than an old two-stroke, but the gap versus electric or battery power doesn't disappear entirely.

Electric and battery mowers produce no exhaust emissions during use, but the environmental impact shifts to how the electricity was generated and, for battery models, to the manufacturing and eventual recycling of the battery. A battery that's kept in good condition and used for many seasons is a better environmental choice than one replaced early because of poor storage habits.

Reel mowers and scythes have the lowest environmental footprint of any option, provided you're willing to put in the physical effort they require.

Mowing season by climate zone

Whichever mower type you choose, the mowing season follows the same pattern as the rest of lawn care: growth drives the schedule, not the calendar. The table below gives a rough sense of when mowing typically starts and stops across USDA hardiness zones 3-6, common across much of the northern and central US, Canada and similar temperate climates.

Let the grass's actual growth guide you rather than a fixed date – a mild spring can push the first mow earlier even in a cooler zone, while a slow, cold start to summer can delay it even further south. For a full season-by-season checklist, see our spring lawn care checklist and autumn lawn care checklist.

Maintenance and winter storage in brief

Clean the underside of the deck after mowing, especially where clippings tend to build up and dry on. Caked-on grass under the housing restricts airflow and makes the mower tear rather than cut.

Winter routines differ by drive type. Petrol mowers should either be run dry of fuel or treated with a stabilizer, with oil and spark plugs checked before the next season. Battery mowers do best stored cool and dry with the battery partially rather than fully charged. Electric and manual mowers need the least attention, but a quick check of blade sharpness before spring is worthwhile no matter which type you own.

Common mistakes when choosing a mower

• Choosing by price instead of lawn size and terrain. The cheapest mower on a large, sloped property wears out fast and leaves a worse cut.
• Underestimating battery runtime. Measure the lawn and compare it honestly to how long a single charge actually lasts.
• Buying a corded mower for a lawn without a convenient outlet. A cord that's constantly too short turns mowing into an unnecessary fight.
• Forgetting about running costs. Fuel, servicing, battery replacement and blade sharpening rarely show up in the advertised price.
• Leaving fuel in the tank over winter without a stabilizer. Often causes hard starting the following spring.
• Storing batteries fully charged or fully drained during long idle periods. Shortens battery lifespan unnecessarily.
• Ignoring local noise ordinances. Check what's allowed before planning to mow early on a weekend morning.

Frequently asked questions

Is a battery mower powerful enough for a normal home lawn?
Yes, for most home lawns up to around 500-700 m² (5,400-7,500 sq ft), a modern battery mower handles the job comfortably. If the lawn has very long or thick grass, steep terrain, or is significantly larger, a more powerful battery model with dual batteries or a petrol mower may be a better fit.

How long does a lawn mower battery last per charge?
A typical battery mower runs for 30-45 minutes per charge, with some premium models exceeding an hour. If one charge doesn't cover the whole lawn, you'll need either a spare battery or a pause to recharge partway through.

Is a corded electric mower safe to use?
Yes, provided you use an outdoor-rated extension cord and run it through a GFCI (ground-fault circuit interrupter). Plan your mowing pattern so you're moving away from the cord rather than across it, which reduces the risk of accidentally cutting it.

Are petrol mowers better than electric or battery models?
Not universally better, but they offer more power and aren't limited by cord length or battery runtime, which suits large, sloped or irregularly shaped lawns. The trade-off is more maintenance, more noise, and exhaust emissions during use.

Should I choose a four-stroke or two-stroke petrol mower?
Four-stroke, if you have the choice. It runs cleaner, doesn't require mixing oil into the fuel, and is the standard on most modern petrol mowers. Two-stroke engines are now mostly limited to older or specialized equipment.

Does a reel mower work on every lawn?
No. It works best on small, fairly flat lawns with finer grass and few weeds. Long, coarse or very uneven grass quickly becomes heavy and frustrating to cut by hand.

How much more expensive is a robot mower than a regular one?
Considerably more upfront, often several times the price of a good battery or petrol mower. The investment is justified by not having to mow yourself, rather than by it being cheaper to run outright.

What cutting width do I need for an average home lawn?
32-42 cm (13-17 in) covers most home lawns while staying maneuverable enough to work around beds and corners. Larger, open lawns benefit from a wider deck to cut down on mowing time.

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