Mowers
Past a certain size a lawn stops being a job about cutting and becomes a job about walking. A 55 cm deck covers 37 per cent more ground per pass than a 40 cm one, and a self-propelled machine means the 35 kilograms is not yours to move. These six are picked on deck width and on drive, and on which of them publish an area figure they can actually be held to.
Cutting a lawn is walking in stripes, and the length of the walk is the area divided by the width.
500 m² at 40 cm is 1 250 metres of walking.
500 m² at 55 cm is about 909.
That is a quarter off the distance, for the same lawn, from one specification — and it is why every pick here is 40 cm or wider.
On top of it sits the overlap nobody counts: passes have to overlap slightly or the lawn gets stripes of uncut grass, so the real distance is longer than the arithmetic in both cases and the ratio holds.
Weight.
One of the mowers here publishes 35.1 kg, and it is the only weight on the petrol shelf.
Thirty-five kilograms is not a problem while the machine is driving itself. It becomes the whole problem the moment it is not: turning at the end of a run, reversing out of a corner, crossing a path, going up a bank, and lifting it into a shed.
Three of these six drive their own rear wheels. On a large lawn — and on any lawn with a slope in it — that is not a comfort feature. It is what decides whether the far end gets cut.
Petrol is the answer that scales without a caveat. It cuts wide, it drives itself, and it does not run out — the tank is refilled in a minute.
What it costs is the servicing, the fuel, the starting, and the noise. Which is worth naming precisely: not one petrol mower on this shelf publishes a guaranteed sound power level, which is the declared figure the category is regulated on. Two of the picks here are petrol and both are silent about it.
Mains at 1800 W with a 40 cm deck covers a stated 600 m², and the cable is the price. On a large open lawn a cable is workable in a spiral pattern from a single socket; through a garden with beds and a tree it is a continuous negotiation.
Battery is the interesting case, and the honest figure is watt-hours. Two 20 V 4 Ah packs come to about 160 Wh, on both of the battery picks here, and one of those makers states it covers 500 m² while the other publishes no area at all.
Past that number it is a second set of packs and a wait, and at that point petrol is simpler.
Underrated on a large lawn, and easy to check.
A full bag stops the cut. You walk to the heap, empty it, walk back and find where you were. On 600 square metres that happens several times, and it is a meaningful share of the afternoon.
Across these six: 80 L, 60 L, 60 L, 40 L, and two that publish nothing.
One of them publishes something better than a volume — a two-layer bag with a level indicator. The two layers are the interesting part: a single-layer fabric bag clogs with dust until air stops passing through it, and a bag that cannot exhaust air stops filling long before it is full. It is the commonest complaint about collecting mowers and it is a fabric problem rather than a volume one.
Mulching.
Three of these six publish a 4-in-1 deck: mow, collect, mulch, side discharge. Mulching means the clippings are recirculated under the deck, cut small, and dropped back into the sward — so there is no bag to empty at all.
On a large lawn that removes the interruption entirely, and it returns the nitrogen in the clippings to the soil, which is a real if modest contribution.
Two conditions, and no listing states them. The grass must be dry, because wet clippings clump and sit on the surface in rows. And it must be short — mulching a lawn that has grown 10 cm produces more material than any deck can disperse.
Which is the same rule as everything else on this page: a large lawn is manageable when it is cut often, and punishing when it is not.
55 cm, 224 cm³, 5.2 kW, rear drive, 60 L, 30–80 mm, 35.1 kg
The widest deck and the only published weight in this family: 224 cm³, 55 cm, 35.1 kg, with assembled dimensions and both wheel sizes given.
Best for: A large open lawn where width and engine matter more than the machine being easy to put away
51 cm, 196 cm³, 6 PS, rear drive, 60 L, 25–75 mm
A 196 cm³ rear-wheel-drive machine at 51 cm, with a 60-litre box and a central height range — the most completely specified listing in this family.
Best for: A large lawn where the width is wanted and the specification needs to be readable before buying
One-piece metal deck, disengageable rear drive, 80 L, 6 steps
A one-piece metal deck, a disengageable rear drive and an 80-litre box with two emptying handles — the largest catcher in this family.
Best for: A large lawn, for a buyer who already knows this maker’s range and does not need the listing to describe it
40 cm, 1800 W with torque control, 6 steps 20–70 mm, 600 m²
The widest corded deck here, with a motor that holds blade speed in wet or long grass and six heights from 20 to 70 mm.
Best for: A large lawn near a socket, and particularly one that is usually cut a week later than it should be
43 cm, 2× 20 V 4 Ah, twin charger, 40 L, 25–75 mm
Two 4.0 Ah packs and a twin charger with a 43 cm deck: the most energy in a complete kit here, and the packs charge in parallel.
Best for: A medium to large lawn where the whole job should finish in one session
40 cm, 2× 20 V 4 Ah, load-sensing, 7 heights, 500 m² stated
A load-sensing motor that raises power in thick grass, a deck shaped to cut close to fences, and a stated two-hour charge for both packs.
Best for: A medium lawn with a lot of boundary, where the strip left for the shears is the annoyance
Around the point where the number of passes starts to matter more than the shape. A 40 cm deck crossing 500 square metres is well over a kilometre of walking; a 55 cm deck is nearer 900 metres. Two of the picks here publish a stated area — 500 m² and 600 m² — and those figures are the only ones on this shelf that can be held against a lawn.
On a large lawn, and on any slope, it is the feature that decides whether the lawn gets finished. A petrol mower weighs around 35 kilograms and pushing it up a bank is the work, not the cutting. Three of these six drive their own rear wheels; the other three are pushed.
On one charge, up to the area its own packs cover — and only one listing on this shelf publishes that number. Two 20 V 4 Ah packs come to about 160 watt-hours, which one maker states covers 500 m². Beyond that it is a second set of packs and a pause, and at that point petrol is the simpler answer.
Because a large lawn produces a great deal of grass and the cut is interrupted every time the bag fills. A 45 litre catcher on 600 square metres is a lot of walking to the heap; 60 or 80 litres is fewer stops. Two of these publish 60 L and one publishes 80 L, and two publish nothing at all.
For : A large open lawn where width and engine matter more than the machine being easy to put away
Main strength : The only published weight and the only published assembled dimensions in the family
Main limitation : 35.1 kg is a lot of machine to manoeuvre, store and lift into a car
For : A large lawn where the width is wanted and the specification needs to be readable before buying
Main strength : The most complete specification in the family — width, displacement, drive, catcher and height range all stated
Main limitation : No weight published, on a 51 cm machine that will be heavy
For : A large lawn, for a buyer who already knows this maker’s range and does not need the listing to describe it
Main strength : The largest catcher in the family at 80 litres, with two emptying handles
Main limitation : Neither the cutting width nor the displacement is published anywhere in the listing
For : A large lawn near a socket, and particularly one that is usually cut a week later than it should be
Main strength : A motor that raises torque to hold blade speed when the grass thickens
Main limitation : No catcher volume published, on the widest machine here
For : A medium to large lawn where the whole job should finish in one session
Main strength : A twin charger, so both packs fill in one session rather than two
Main limitation : No weight published, on a 43 cm machine carrying two packs
For : A medium lawn with a lot of boundary, where the strip left for the shears is the annoyance
Main strength : A motor that raises power when the grass thickens and drops it when it does not
Main limitation : No cutting-height range, only the number of positions
Head-to-heads already published between two models from this guide or this aisle.
The models here come from the catalogue of this site. Specifications are those published by the manufacturer and on the Amazon product page; prices are what Keepa reported on the date below, and both move. The ranking uses declared specifications, the balance of stated strengths and limitations, and price. No product on this site has been physically tested, and nothing here claims otherwise.
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A mower gets bought when the grass is already too long, which is the worst possible moment to weigh up a price: demand on this shelf climbs from March and drops away after July, so a price struck through in May tells you nothing whatever about what the same reference cost in October. UniverTrack keeps a week-by-week record for each retailer, so a cut price can be set against one somebody really paid rather than one composed for the banner — and it says when ordering is genuinely the moment.
