The best electric lawnmowers 40 cm, compared.
Top pick: Flymo Speedi-Mo 360C Best value: Flymo Speedi-Mo 360C – Highest score at 92, about £110, with 4.6 from 6,673 reviews. The deck is 36 cm, and box litres and cable length are not stated. Updated 22 October 2026.
An electric lawnmower in the 40 cm class is a walk-behind rotary you push, on a mains lead or on a battery. You buy one in the UK for a small or medium lawn you can reach from a socket, or for a short cut a pack can finish. The 40 cm figure is the search width, not a guarantee that every listing cuts at that size. A suitable machine is one whose cutting width, cutting height and included parts agree. Check whether the price buys a complete mower, a battery and a charger, or the body only, and whether a lead length is printed. A rear roller and a mulch plug are stated parts, not a stripe you can assume. UK mains are nominally 230 V with a BS 1363 three-pin fused plug, and the outdoor supply should have RCD protection. Do not mow wet grass, keep any cable behind you, and unplug before you touch the blade. The [40 cm electric lawnmower buying guide](/hub/lawn-and-garden-equipment/electric-lawnmower-40cm/sub/electric-lawnmower-40cm-buying-guide) sets the order for width, lead or pack, box and roller.
An electric lawnmower in the 40 cm class is a walk-behind rotary you push, on a mains lead or on a battery.
42 products checked · 57 hrs invested · +22,800 readers
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Personal buying guide
Question 1 of 2
Do you want a lead or a battery?
The Flymo Speedi-Mo 360C is a 36 cm corded rotary at about £110, with a 1500 W motor, five heights from 20–60 mm and a stated weight of 11.5 kg. Across 6,673 amazon.co.uk reviews the line is 4.6, the highest stars and the largest sample here, so the score is 92, and on this page it is the best value. Reviewers often say it is light enough for a parent or an older user, and that it collects better than a hover, with less blow-back. The same reviews say the lowest cut is still too high for some lawns, and that the long nose misses grass where fences meet. A bumpy lawn and a finish that looks rough around the edges come up as limits, not a repeated motor failure. The listing does not state grass-box litres or a cable length, and it does not state a rear roller. Sound pressure at the ear is given as 87 dB(A), which is not the outdoor sound-power label. It is a strong corded choice beside a nearby socket, and it is still a 36 cm push mower rather than a stated 40 cm stripe machine.
Pros
Cons
Best for: You want a widely reviewed corded mower near £110 for a fairly flat lawn and a socket you can reach.
Less suitable: You need a stated 40 cm deck, stripes, a printed lead length, or a very low cut.
Specifications
Common questions
What cutting width does the Speedi-Mo state?
36 cm. It is a wheeled corded rotary, not a 40 cm deck.
Does the listing give a noise figure?
Yes. Sound pressure at the operator’s ear is stated as 87 dB(A). That is not the outdoor sound-power label.
Is a grass-box capacity stated?
The bullets say the box is easy to remove. They do not state litres.
The swift EB122C is a 22 cm cordless mower at about £134.99, with a 40 V 2.0 Ah battery, a fast charger and a stated weight of 5.2 kg. It scores 4.5 from 330 reviews, and the score is 90. The 22 cm width and the 50 m² claim keep it off a badge. Reviewers say it is light enough for older users and a small slope, that mulching means no box to empty, and that it fits in a boot where there is no outdoor socket. The listing claims up to 50 m², and reviews agree it is not the machine for a large lawn. One owner had the control mechanism break after about 13 months of light use, and others call it fragile next to a full-size mower. Height is only 30–50 mm in three steps, and a grass box is not stated. It stands upright, which suits a small shed, and there is no mower lead.
Pros
Cons
Best for: You have a very small lawn or a side strip, no outdoor socket, and you want a light kit that stands upright.
Less suitable: You are mowing a lawn that wants a 35–43 cm deck, or you need a grass box.
Specifications
Common questions
Is the swift a 40 cm mower?
No. The listing states a 22 cm cutting width for small lawns.
Does it include a battery?
Yes. A 40 V 2.0 Ah battery and a fast charger are stated.
Does it collect clippings?
A grass box is not stated. The bullets describe mulching, with clippings left on the lawn.
The Einhell GC-EM 1600/37 is a 37 cm corded mower at about £114.99, with 1600 W, a 38 L box, five heights from 20–60 mm and a stated 10 m lead. It scores 4.5 from 298 reviews, and the score is 90. At about £5 more than the Speedi-Mo you get a named box, a printed lead and a slightly wider deck, beside that higher-scoring Flymo. It stays unbadged. Reviewers say it is light to push, that it will still cut a neglected lawn, and that little is left on the grass. They also say there is no mulching attachment, the lead is shorter than older mowers, and the grass box is awkward to attach. One owner had to fit split pins before the rear wheels stayed on, and the height lever can knock out of position near shrubs. The seller’s line of up to 700 m² is a claim, not a measured lawn, and assembly is described as about 20 minutes.
Pros
Cons
Best for: You want a corded 37 cm mower with a stated box and a printed 10 m lead, and you will check the wheels on arrival.
Less suitable: You need a mulch plug, a rear roller, or a lead longer than 10 m.
Specifications
Common questions
Is 700 m² a measured area?
No. It is the seller’s line for the GC-EM 1600/37. The cutting width stated is 37 cm.
Does it mulch?
The bullets do not state a mulch plug. One reviewer says there is no mulching attachment.
How long is the lead?
The listing states 10 m. Reviews say that is shorter than some older mowers.
The Worx WG737E is a 37 cm brushless cordless kit at about £229, with two 20 V 4.0 Ah packs, a charger, a grass bag and a mulch plug. It scores 4.5 from 207 reviews, and the score is 90. About £229 holds it out of the value badge. Reviewers say it is lighter than the petrol mower it replaced, and that two batteries can finish a lawn with charge left for some buyers. The mulch plug is used to return clippings instead of filling the bag, and at least one reviewer got through longer and wet grass. The first charge of both packs takes a while, one reviewer calls 4 Ah small on a large lawn, and results after a year as a petrol replacement are mixed. One first unit arrived with a part missing. Up to 550 m² and up to 90% collection are seller claims. Six heights run from 20–70 mm, the stated weight is 15.3 kg, and the listing does not say it is self-propelled. Bag litres are not stated.
Pros
Cons
Best for: You want a cordless 37 cm mower that arrives with two packs and a charger, and you will not treat 550 m² as measured.
Less suitable: You need stripes, a corded price near £110, or a self-propelled drive.
Specifications
Common questions
Does the WG737E include batteries?
Yes. Two 20 V 4.0 Ah PowerShare packs and a charger are in the bullets.
What area does the listing claim?
Up to 550 m². That is the seller’s figure, not a measured result.
Is it self-propelled?
The listing does not say so. Operation mode Automatic is not a drive claim.
The Flymo 38 cm listing is a 1600 W corded rotary at about £135, with a 45 L box, five heights from 20–60 mm, a stated 10 m lead and a weight of 12.6 kg. Across 4,468 amazon.co.uk reviews the line is 4.4, so the score is 88, and on this page it is the top pick. It is the large-sample corded mower nearest the 40 cm class. Reviewers say it cuts a large lawn and feels like a step up from an older small Flymo, and upright storage is praised where the shed is small. Some repeat buyers say a previous Flymo lasted about five to ten years. The 10 m cable is a repeated complaint, with one owner wanting 15 m, and at least one owner says the box collects poorly. Plastic quality is questioned against an older Flymo, and handle springs make one-person assembly hard. A review describes a replacement roller that was awkward to fit, but the bullets do not state a rear roller, so that is not a spec. The dimension cell prints 505 x 172.1 x 395 cm, which is not a usable shed size, and the mower is not stated as self-propelled.
Pros
Cons
Best for: You want a widely reviewed 38 cm corded mower with a 45 L box and you will add an extension rather than expect a long lead.
Less suitable: You want a stated rear roller, a cordless mower, or a dimension line you can use for the shed.
Specifications
Common questions
Does the Flymo 38 cm include a rear roller?
The bullets do not state a rear roller. One review mentions a replacement roller and upright storage. That is not a listing spec.
How long is the cable?
The listing states a 10 m cable. Reviews call that short for a larger garden.
Is it self-propelled?
The listing does not say it is self-propelled. The operation-mode line says Manual.
The Ryobi OLM1833B is a 33 cm 18 V ONE+ bare tool at about £160.20, with a mulch plug, a 35 L collector and an Easy Edge comb, and the title excludes the battery and the charger. It scores 4.3 from 2,487 reviews, and the score is 86. Owners who already have ONE+ packs call it very light and useful between raised beds on a small manicured lawn. One 5.0 Ah pack finished a lawn and then a strimmer for one owner, which is the pack the bullet’s up to 250 m² line assumes and does not include. Reviews say a single battery lasts about 30 minutes, that it will not cope with a first cut of long grass, and that it cuts out if the height is too low. Damp grass is a repeated weak point. One unit arrived and would not start and was replaced, and a deflector left in stopped the bag collecting until it was removed. The bullet says 7.7 kg without a battery and the item-weight line says 10.3 kg.
Pros
Cons
Best for: You already own 18 V ONE+ packs, including something near 5.0 Ah, and you want a 33 cm deck for a small tidy lawn.
Less suitable: You need a mower that cuts on the day it arrives, or a stated rear roller.
Specifications
Common questions
Does this Ryobi include a battery?
No. The title says battery and charger excluded.
What does the 250 m² line need?
The bullet ties that area to an 18 V ONE+ 5.0 Ah battery, which is not in the box.
Is there an edge comb?
Yes. The bullets state an Easy Edge grass comb and a mulching plug.
The Litheli is a 33 cm 20 V cordless mower at about £109.99, with a stated 5.0 Ah pack, a 35 L box, a mulch-or-collect choice and a weight of 11.1 kg. It scores 4.3 from 684 reviews, and the score is 86. Several owners say the pack covers a small or medium lawn and that height adjustment is easy, and early reports mention thicker grass after a heatwave. Runtime is the repeated limit at about 25 to 30 minutes, which matches the bullet claim of up to 30 minutes rather than a measured lawn size. One battery arrived dead, with no lights, and the charger lead is criticised, including one owner who charged from a phone charger. The bullets include the 5.0 Ah pack and an extra blade, and they do not name a charger. Height is 25–65 mm in five steps in the bullets, while the spec minimum prints as 25 centimetres, so both lines stay on the page. A rear roller is not stated.
Pros
Cons
Best for: You want a cordless 33 cm mower with a battery in the title for a small lawn, and you will check the charger before you rely on it.
Less suitable: You need a named UK charger, a 40 cm deck, or a single height figure you can trust.
Specifications
Common questions
Is a charger in the Litheli box?
The title and bullets include a 5.0 Ah battery. They do not name a charger.
Can it mulch?
Yes. The bullets say mulch or collect in a 35 L bag.
What is the cutting height?
The bullets say 25–65 mm in five steps. The spec table prints the minimum as 25 centimetres. Both lines are on the listing.
The Hyundai HYM3800E is a 38 cm corded push mower at about £158.31, with 1600 W, a rear roller, a mulch plug, a 40 L bag and a stated 10 m lead. Across 3,914 reviews the line is 4.2, and the score is 84. Reviewers praise the stripes, a simple height change, folding for the shed, and big wheels on uneven ground. The 10 m lead is called short, one owner wanted another 5 m, and longer grass makes it struggle or overload. Fold joints failed after about three years in one account, and warranty contact is described as poor, including a case where the maker asked for a video. Collection can leave clumps unless you mow the line again. The bullet says 12.5 kg and the item-weight line says 13.8 kg, while about 225 m² is a seller claim. Five height steps have no millimetre range, the listing warranty is 3 years, and it is not stated as self-propelled.
Pros
Cons
Best for: You want a widely reviewed roller mower with a mulch plug and a 3 year warranty line, and you will live with a 10 m lead.
Less suitable: You need a stated 40 cm deck, a single weight figure, or a self-propelled drive.
Specifications
Common questions
Does the Hyundai stripe?
The listing states a rear roller for stripes, and a mulch plug. It does not say the mower is self-propelled. The stripe was not mown for this page.
What lawn size does the listing claim?
About 225 m². That is the seller’s figure for this 38 cm mower.
Is the weight 12.5 kg?
The bullet says 12.5 kg. The item-weight line says 13.8 kg. Both are on the listing.
The Bosch EasyRotak 32-220 is a 32 cm corded mower at about £108.59, the lowest price in this set, with 1200 W in the highlight, a 31 L box and a spare blade in the carton. It scores 4.2 from 344 reviews, and the score is 84. On a small lawn, reviewers say it is lighter than a hover and that the spare blade is welcome, especially when the price was an offer. The same reviews call the build flimsy next to an older Bosch. One owner says the motor cuts out, another had a wheel smash on uneven ground, and the handle does not fold low enough to store. Handle bolts are said not to self-tap, and one box arrived looking pre-opened with cable clips missing. The height table says five positions, but the millimetre range is not stated, and neither is the lead length. This is a small-patch corded mower that appears in a 40 cm search, not a 40 cm deck.
Pros
Cons
Best for: You have a small patch, a nearby socket, and you want a spare blade in the box.
Less suitable: You need 38–40 cm, a printed lead length, or a handle that stores very flat.
Specifications
Common questions
Is the EasyRotak a 40 cm mower?
No. The highlight and the model name state 32 cm.
Does it include a spare blade?
Yes. The included line names an extra blade, and the highlight names grass combs.
Does the handle fold?
The bullets say foldable handles. One reviewer says the handle does not fold low enough to store.
The Einhell GE-CM 43 Li kit is the widest mower here, at 43 cm and about £239.94, with two 4.0 Ah packs, two fast chargers, a mulching wedge, a bag up to 63 L and a stated weight of 16 kg. It scores 4.1 from 6,758 reviews, and the score is 82. Two-pin charger reports and the price keep it off a badge. Owners say two batteries suit a larger garden once the grass is in a normal cycle, and that it is lighter and quieter than the petrol mower it replaced. Long grass is where runtime collapses, with one report of about 10 minutes, and a week of growth on the lowest setting is too much. Grass-box clips snap for some owners, and the box is fiddly to build. Several reviews report a two-pin charger plug rather than a UK three-pin, so you check for a BS 1363 plug before you treat that complaint as every carton. Six heights run from 25–75 mm, up to 600 m² is a seller claim, and the listing does not say the mower is self-propelled. Warranty is 2 years, plus 1 year if you register.
Pros
Cons
Best for: You want the widest cordless kit in this comparison for a lawn already in a mowing cycle, and you will confirm the chargers are BS 1363.
Less suitable: You need the listing itself to promise a UK three-pin, a rear roller, or a corded mower under £160.
Specifications
Common questions
Does this Einhell include batteries?
Yes. Two 4.0 Ah packs and two fast chargers are in the title and bullets.
Are the chargers a UK plug?
The listing does not say. Several reviews report a two-pin plug rather than a UK three-pin. Check the carton for BS 1363.
Is it self-propelled?
The bullets do not say so. The cutting width stated is 43 cm.
The LawnMaster MEB1840M-01 states a 40 cm cut at about £146.99, with 1800 W, a rear roller, a mulch plug, a 42 L bag, a 10 m cable and a weight of 15 kg. It scores 4.1 from 317 reviews, and the score is 82. Reviewers say it cuts well and can stripe, and one owner links the mulch plug to a greener lawn. The 10 m cable is called too short for a larger lawn, so people add an extension. The handlebar is too high and tiring if you are not tall, the grass box is awkward to fit, and the instructions are called poor. One owner found the plastic casing disappointing after a couple of seasons, and another had clippings thrown back. The spec table says assembly is required, with six heights from 20–70 mm and a 2 year warranty. It is not stated as self-propelled. A Currys page for the same model name is a different price and cable line from this amazon.co.uk row.
Pros
Cons
Best for: You want stripes on a modest flat lawn and you will manage a 10 m lead, the roller’s drag, and the handle height.
Less suitable: You want a light push with no cable, or you are taking the cable length from a shop page other than this amazon.co.uk listing.
Specifications
Common questions
Does the LawnMaster have a rear roller?
Yes. The title and bullets state a rear roller for stripes, plus a mulch plug. The stripe was not mown for this page.
How long is the cable on amazon.co.uk?
This listing states 10 m. Reviews call that short. A shop page for the same model name can show a different price and cable line.
Is assembly required?
The spec table says yes. Reviewers describe about 30 minutes and small print.
The Bosch AdvancedRotak 40-650 states a 40 cm cut at about £209.94, with 1700 W, GrassCombs and a fabric bag with a fill indicator. It scores 4.0 from 99 reviews, the thinnest sample here, and the score is 80. Reviewers include a wet spring cut that collected well, and one lawn left for two months that it coped with. The lead is described as about 10 m and hard-wired, which stays a review line because the bullets do not print a length. It is heavy to carry on steps, it can run away on a steep slope, and the plastic housing and fabric collector are called flimsy for the price. One owner says it stopped after about six weeks, and long grass was not all collected on the first pass. The item weight prints as 1 kg, which is not a usable figure and has not been replaced with a guess. Cutting height, bag litres and a rear roller are not stated.
Pros
Cons
Best for: You specifically want a stated 40 cm Bosch corded deck and you will ignore the 1 kg weight cell.
Less suitable: You want a large review sample, a printed lead length, or stripes from a rear roller.
Specifications
Common questions
Is the AdvancedRotak 40 cm?
Yes. The title states a 40 cm cutting width and a 1700 W motor.
Is the cable length on the listing?
The bullets do not state a length. Reviews describe a lead of about 10 m that is hard-wired.
Can you use the 1 kg item weight?
That is the figure on the listing. It is not a usable weight for this mower, and it has not been replaced with a guess.
Scores use the 12 amazon.co.uk listings captured on 19 October 2026. Stars and sample size are 45 percent, spec fit and what is in the box are 35 percent, and deductions are 20 percent. Seller area lines are not added as points. Nothing in this set was mown for the score, and no magazine mark was copied onto an ASIN.
Stars and sample size
45%The amazon.co.uk star line and the review count on that ASIN. A thin sample holds a listing back even when the stars look strong.
Spec fit and box contents
35%What the price buys: stated width, a lead length, a battery, a charger, a grass box, a mulch plug and a rear roller. The check is whether those parts are named on the listing.
Deductions
20%Width far from the 40 cm search class, a bare tool priced like a mower you can use today, a battery with no charger named, a very small review sample, an unusable spec cell, and repeated review faults such as a short lead, a non-UK plug report, or runtime collapse in long grass.
Start with the width printed on the listing, then the lead or the pack, then the box, the mulch plug and the roller. Seller area lines stay claims. This page did not mow a lawn.
A 40 cm electric lawnmower, in the way UK shoppers search, is a pedestrian rotary with a mains motor or a battery. The width on the listing is the check that matters. A rough garden guide puts about 30–35 cm on lawns up to about 250 m², about 35–43 cm on about 250–580 m², and about 43–55 cm above that. Those bands are a rule of thumb from published buying advice, not a cut measured for this page. A 22 cm or 32 cm machine can suit a tiny patch.
A 22 cm or 32 cm listing can appear in this search and still be the wrong width. Use the centimetres on the page, not the search label.
If the title excludes the battery and the charger, the shelf price does not start the mower. A pack named in a title is also not a charger unless the bullets name one.
Figures such as 700 m² are claims. A rear roller is stated on only two listings here. Do not daisy-chain extension leads, and do not clear a chute while the mower is plugged in.
Width is the first check because the search label and the deck often disagree. The English Garden’s rough guide, which is not a test of these ASINs, puts about 30–35 cm on lawns up to about 250 m², about 35–43 cm on about 250–580 m², and about 43–55 cm above that. A deck near 36–38 cm can still be a sensible small-lawn mower. It is not a stated 40 cm cut. A 22 cm machine is for a tiny patch or steps.
The second check is what the price actually buys. Stated leads on the corded rows that print one are 10 m, and reviews call that short for a larger garden. You then need one outdoor extension, fully unwound, with a thermal cut-out, and you do not plug a second lead into the first. Cordless rows replace that lead with a pack and a charger. Confirm both. A bare 18 V tool excludes them. A stated 5.0 Ah pack is not a named charger.
Three typical situations, each with a recommendation from this comparison.
You have a fairly flat lawn and a socket you can reach, and you will manage a lead. The Flymo Speedi-Mo 360C is 36 cm and 1500 W at about £110, with 4.6 from 6,673 amazon.co.uk reviews. Box litres and cable length are not stated.
You want a stated rear roller and you will live with roller drag and a 10 m lead. The LawnMaster MEB1840M-01 prints 40 cm, a roller, a mulch plug and a 42 L bag at about £146.99. The stripe itself was not mown for this page.
You do not want a lead, and you will pay for batteries that arrive with the mower. The Worx WG737E is a 37 cm kit with two 20 V 4.0 Ah packs and a charger at about £229. Up to 550 m² is a seller claim.
The top pick is the Flymo 38 cm corded mower, score 88: 38 cm, 4.4 from 4,468 amazon.co.uk reviews, a 45 L box and a stated 10 m lead at about £135. The best value is the Flymo Speedi-Mo 360C, score 92, the highest score in the set, at about £110 with 4.6 from 6,673 reviews on a 36 cm deck. The highest number is not the top-pick row, so the 38 cm listing can sit nearest the 40 cm class while the cheaper 36 cm listing carries the value label. The Einhell GC-EM 1600/37 scores 90 at about £114.99 and stays unbadged. A stated 40 cm deck is the LawnMaster or the Bosch AdvancedRotak, not every row in this search.
Flymo Speedi-Mo 360C
Highest score at 92, about £110, with 4.6 from 6,673 reviews. The deck is 36 cm, and box litres and cable length are not stated.
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.
Sources from the research digest. Listings were captured on amazon.co.uk on 19 October 2026.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, star ratings and review counts are from those listings. We did not mow with these machines.
