The best 46 cm electric lawnmowers, compared.
Top pick: Greenworks 46 cm bundle Best value: Withheld – Best value is withheld. The LawnMaster is also the lowest shelf price, so a second badge would repeat the same listing. Updated 22 October 2026.
A 46 cm electric lawnmower is a walk-behind rotary with a cutting width of about 46 cm, for a UK lawn that feels slow on a narrower deck. You buy one when fewer passes matter and the gates, paths and shed can take a wider machine. A usable listing states one height range, names the collector or a mulch plug, and, on a cordless mower, includes the batteries and a charger. Corded kit still suits a lawn beside a socket: UK mains are 230 V, the cable stays behind you, and an RCD belongs on outdoor use. Do not assume a BS 1363 plug unless the listing prints one. Drive helps on a long lawn or a gentle slope. It does not make a steep bank safe. Count a rear roller only when the listing states one. Manufacturer area charts disagree, so measure the lawn before you trust a square-metre line. Stay off wet grass, and remove the battery or unplug before you clear the deck. The [46 cm electric lawnmower buying guide](/hub/lawn-and-garden-equipment/electric-lawnmower-46cm/sub/electric-lawnmower-46cm-buying-guide) sets out which features have to be written down before width alone decides the purchase.
A 46 cm electric lawnmower is a walk-behind rotary with a cutting width of about 46 cm, for a UK lawn that feels slow on a narrower deck.
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Personal buying guide
Question 1 of 2
What do you need the mower to do?
The Greenworks bundle is a self-propelled 46 cm cordless mower with a 55 L collector, two 4 Ah batteries, a twin charger and a spare blade in the title at about £495.98. Its 4.7 out of 5 line is the highest raw rating here, but it comes from only three amazon.co.uk reviews and there is no review text in the captured material, so it does not earn the top-pick badge. The score of 94 is that star line times 20. The listing states a 3-in-1 arrangement with mulching and side discharge, a steel deck and a lawn recommendation of up to 480 m². Those are useful features for a larger open lawn, though the area figure is a seller claim rather than a verified one-charge result. The height bullets give 25–80 mm in seven steps, while the specification table prints a maximum of 80 cm, an obvious conflict that should be resolved from the manual before mowing. No rear roller or product weight is stated, which makes stripe performance and handling into storage harder to judge. This bundle suits you if drive, mulching and a spare blade justify the highest price, but the very small review sample leaves more uncertainty than the other two listings.
Pros
Cons
Best for: You want stated self-propulsion, mulching and a spare blade in one kit and accept paying more for a listing with limited review evidence.
Less suitable: You want a well-supported owner rating, a stated rear roller, a known lifting weight or an unambiguous height specification.
Specifications
Common questions
Why is this Greenworks row about £495.98?
The title adds a 46 cm replacement blade and the page prints number of items 3. The captured price is the bundle.
What cutting height does it list?
The bullets say 25–80 mm in seven steps. The spec table prints a maximum of 80 centimetres. Those lines conflict.
Are batteries included?
The bullets say two 4 Ah batteries and a twin charger.
The LawnMaster cuts a 46 cm path and pairs it with a 60 L collector, four 4.0 Ah batteries and a stated rear roller at about £379. Across 61 amazon.co.uk reviews it holds 4.1 out of 5, a more useful evidence base than the three-review Greenworks bundle, and that is why it is the top pick in this comparison. Owners particularly value the striped finish and the generous battery set, while the folding handles and 19.3 kg stated weight make storage and lifting more manageable than with the 24.1 kg Einhell. The mower is not described as self-propelled, and UK reviewers say there is no assisted drive, so rough ground and longer grass demand more pushing. The 60 L box is another recurring weak point: buyers report that it can be awkward to fit and that its plastic construction feels less convincing than the mowing performance. The listing also conflicts on cutting height and charger wording, so you should use the supplied manual rather than reconcile those lines yourself. It is the strongest fit here when stripes, battery capacity and price matter more than wheel drive.
Pros
Cons
Best for: You want a wide cordless mower that can leave stripes, includes four batteries and remains light enough to lift more readily than the driven Einhell.
Less suitable: You need assisted drive for rough ground, long grass or a gentle slope, or you want an unambiguous cutting-height specification.
Specifications
Common questions
Does the LawnMaster 46 cm have a rear roller?
The bullets state an integrated rear roller and edge combs.
Is it self-propelled?
The listing does not say so. UK reviews say there is no assisted drive.
How many batteries are in the box?
The bullets say four MX 24 V 4.0 Ah batteries. The charger wording conflicts: one dual charger in the bullets, and two fast chargers in the item-type name.
The Einhell combines a 46 cm steel deck with stated variable-speed wheel drive, a 50 L collector and two 4.0 Ah batteries at about £448. Its score is 76, from 3.8 and 22 amazon.co.uk reviews multiplied by 20. Its 25–80 mm range in nine steps is the clearest height specification in this comparison, while the listing recommends it for lawns up to 500 m². One UK owner reports that a lawn of about 310 m² exceeded the expected battery run, so the area claim should be treated as a seller recommendation rather than a measured promise. Reviewers appreciate the wide cut, but the stated 24.1 kg weight matters when the drive is off or the mower must cross steps and storage thresholds. One owner also notes a short delay before the drive engages compared with a petrol mower. Neither a rear roller nor a mulch function is stated, so this is the drive-first choice rather than the stripe-first one. Choose it when reducing push effort is worth paying more and accepting the extra lifting weight.
Pros
Cons
Best for: You have a long, mostly open lawn or gentle gradient and want stated variable-speed drive with a clear cutting-height range.
Less suitable: You regularly lift the mower, want a stated rear roller for stripes, or need the 500 m² line to be a guaranteed one-charge result.
Specifications
Common questions
Is the Einhell 46 cm self-propelled?
The bullets say wheel drive with variable speed regulation.
Does the box include a mulch plug?
Included components list the mower, two 4.0 Ah batteries and a twin charger. They do not list a mulch plug.
What lawn area does the listing claim?
The bullets recommend lawns up to 500 m². That is a listing line, not a measured run.
Each score is the amazon.co.uk star line multiplied by 20, which is the whole 100-point scale. There is no separate weight list and no lab cut. The top pick is the highest star line among kept listings with at least 20 reviews. A 4.7 from three reviews stays below that bar. Best value is withheld, because the same listing is also the lowest shelf price, and a second badge would repeat it. Prices and stars are the 19 October 2026 amazon.co.uk capture.
Amazon.co.uk star line
100%The published score is the amazon.co.uk star rating times 20. A review count under 20 blocks the top-pick badge. It is not a second percentage, and it is not rescaled.
Choose a 46 cm electric lawnmower by the lines the listing actually agrees on: cordless or corded, batteries and a charger in the box, drive or push, a stated rear roller, and one height range. A square-metre claim is a seller recommendation. A silent bullet is a missing feature, not a hidden one.
A 46 cm electric lawnmower is a pedestrian rotary: a blade under a deck, with a cutting width of about 46 cm, powered from the mains or from battery packs. You buy one in the UK when a narrower deck means too many passes and the gate, the path and the shed can take the extra width and the extra weight. A cylinder is a reel for a fine lawn. A hover suits banks. Neither is this category. Listings at 33–43 cm, and a 36 cm hover, sit outside it. A 46 cm path is wider in a gate and heavier to lift.
A 37–43 cm mower, or a hover, is a different machine. It takes more passes and may be easier through a tight gate. Read the centimetres on the listing, then measure the gate and the shed.
Charts from manufacturers disagree, and a line of 480 or 500 m² is a seller recommendation. One UK review of a 500 m² claim did not finish about 310 m². Measure the lawn.
If the bullets do not state wheel drive, the mower is a push machine. If they do not state a rear roller, do not buy it for stripes. Do not average a height table that mixes millimetres and centimetres.
Cutting width is the first check. A 46 cm path covers more grass per pass than a 33–43 cm deck, and it is wider in a gate and heavier to lift. Confirm the centimetres on the specification, then measure gates, paths and storage before you decide the width suits the garden. Power source is the next check. A cordless price is a kit only when the batteries and a charger are in the box. Packs fit the stated brand system only.
Drive is for a long lawn or a gentle slope. It reduces the push while the wheels are powered. It does not make a steep bank safe, and it usually leaves you with more weight to lift once the drive is off. Push is easier to carry and harder with a full box. If the listing is silent, write the drive as not stated. A rear roller is a separate part. Count it only when the bullets state one, and only if you want stripes. A rotary roller is not a cylinder reel. Silence is not a roller.
Three typical situations, each with a recommendation from this comparison.
You want a stated rear roller, four batteries in the box and a 60 L collector, and you will push. The LawnMaster 46 cm is about £379, at 4.1 from 61 amazon.co.uk reviews, with a stated weight of 19.3 kg. Drive is not stated.
You want stated variable-speed wheel drive and one clear height range. The Einhell GC-CM 36/46 is about £448, at 3.8 from 22 reviews, with two 4.0 Ah batteries and a stated weight of 24.1 kg. The 500 m² line is a listing recommendation.
You want stated self-propulsion, mulching and a spare blade in the title, and you accept a thin review sample. The Greenworks 46 cm bundle is about £495.98, at 4.7 from three reviews, with no captured review text and no stated weight.
The top pick is the LawnMaster 46 cm. Its score is 82, from 4.1 and 61 amazon.co.uk reviews multiplied by 20, at about £379, with four 4.0 Ah batteries, a 60 L collector and a stated rear roller. It is not described as self-propelled. The Greenworks bundle scores 94 from 4.7 and three reviews, which is under the 20-review bar, so that star line does not take the badge. The Einhell scores 76 from 3.8 and 22 reviews and is the drive-first row, with a clear 25–80 mm height range. Best value is withheld. The lowest shelf price is the same listing as the top pick, and one product does not carry both awards.
Withheld
Best value is withheld. The LawnMaster is also the lowest shelf price, so a second badge would repeat the same listing.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources below, plus the amazon.co.uk listings B0D1RDDFQC, B0GJTN32QX and B0D3CSM21V, captured on 19 October 2026 and not re-checked live on 22 October 2026.
This page contains affiliate links. If you buy through them, we may earn a commission at no extra cost to you. The comparison uses amazon.co.uk listings and public UK sources. We did not run these mowers on a lawn.
