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Petrol Lawnmowers

Our range of petrol lawnmowers is built for power and reliability, making them the natural choice for larger lawns, uneven ground, or rougher terrain where electric and battery mowers can struggle. Choose from push, self-propelled, and rear-roller petrol lawn mowers from trusted brands including Cobra, Masport, Webb, Cub Cadet, and Harry, with engines from Briggs & Stratton, Honda, and Loncin. Whether you’re after a compact push mower for a modest garden or a heavy-duty self-propelled roller mower for a striped, professional finish, we stock petrol lawnmowers to suit every lawn size and budget. All orders benefit from free UK delivery, our 90-day money-back guarantee, price match promise, and flexible finance options — so you can buy your new petrol lawn mower with confidence.

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    Cobra M40C 40cm Cut Push Petrol Lawn mower

    £189.99

    Save 11%

    Cobra M40CVX 16″ Hand Propelled Lawnmower

    Original price was: £212.99.Current price is: £189.99.

    Save 11%

    Cobra M40SPCVX Self Propelled 16″ Lawnmower

    Original price was: £259.00.Current price is: £229.99.

    Cobra M41C 41cm Push Petrol Lawn mower

    £167.99

    Save 9%

    Cobra M46C 46cm Push Petrol Lawn mower

    Original price was: £257.99.Current price is: £235.99.

    Save 9%

    Cobra M46CVX 18″ Push Lawnmower

    Original price was: £257.99.Current price is: £235.99.

    Save 8%

    Cobra M46SPCVX Self Propelled 18″ Lawnmower

    Original price was: £305.99.Current price is: £279.99.

    Save 4%

    Cobra M48SPH Pro BBC Self-propelled Petrol Mower

    Original price was: £1,179.00.Current price is: £1,130.00.

    Save 9%

    Cobra M51SPCVX Self Propelled 20″ Lawnmower

    Original price was: £382.99.Current price is: £349.99.

    Save 17%

    Cobra MM51C Mulching Push Petrol Lawn Mower

    Original price was: £299.99.Current price is: £249.99.

    Cobra MX460SPC 4in1 Self-Propelled Petrol Mower

    £289.99

    Save 12%

    Cobra MX460SPH 18″ Honda GCVX145 Petrol Engine Self-Propelled Lawnmower

    Original price was: £429.99.Current price is: £379.99.

    Cobra MX460SPH Self-Propelled Petrol Lawn Mower

    £379.99

    Cobra MX484SPCE 48cm Self-Propelled Electric Start Lawn Mower

    £359.99

    Save 7%

    Cobra MX515SPBI 20″ Self-Propelled 5 Speed Rotary Lawnmower

    Original price was: £689.99.Current price is: £639.99.

    Cobra MX534SPCE 52cm 4-IN-1 Petrol Lawnmower

    £399.99

    Cobra MX534SPH Self-Propelled 4 Speed Mower (Honda Engine)

    £469.99

    Save 8%

    Cobra RM40C 40cm Push Petrol Rear Roller Lawn mower

    Original price was: £348.99.Current price is: £319.99.

    Cobra RM40SPC 40cm Self Propelled Rear Roller Lawn mower

    £349.99

    Save 8%

    Cobra RM40SPCE 40cm Self Propelled ES Rear Roller Lawn mower

    Original price was: £436.99.Current price is: £399.99.

    Cobra RM46SPBR Self Propelled Rear Roller Lawn mower

    £449.99

    Cobra RM46SPC Self Propelled Rear Roller Petrol Lawn mower

    £389.99

    Save 9%

    Cobra RM46SPH Self Propelled Rear Roller Lawn mower

    Original price was: £497.99.Current price is: £454.99.

    Cobra RM48SPH Self Propelled BBC Petrol Rear Roller Lawnmower

    £1,175.00

    Frequently Asked Questions

    How do I choose the right petrol lawnmower for my garden?

    It mainly comes down to lawn size and terrain. Push mowers with a 40–46cm cutting width suit smaller, flatter gardens, while self-propelled models are better for larger or sloped lawns as the engine drives the wheels for you. For a striped, formal finish, choose a rear-roller petrol lawnmower.

    What's the difference between a push and self-propelled petrol lawnmower?

    A push mower relies on you to move it forward, making it lighter and cheaper but harder work on bigger or uneven lawns. A self-propelled mower has a drive system that pulls itself along, reducing effort — ideal for larger gardens, slopes, or if you're mowing regularly.

    Are petrol lawnmowers better than electric or battery mowers?

    Petrol lawnmowers generally offer more cutting power and aren't limited by a cable or battery run-time, making them better suited to larger lawns, thicker or longer grass, and rougher ground. Electric and battery mowers tend to suit smaller, more manageable gardens.

    How often does a petrol lawnmower need servicing?

    As a minimum, check and top up the oil before each mowing season, clean or replace the air filter annually, and replace the spark plug and blade as needed. An annual service — cleaning the deck, sharpening the blade, and checking the engine — keeps it running efficiently and extends its lifespan.

    What size petrol lawnmower do I need?

    As a rough guide: up to around 250m² suits a 35–40cm cutting width, 250–500m² suits 41–46cm, and anything larger than 500m² benefits from a 48cm+ self-propelled or roller mower to cut mowing time down but do check the specification on each mower where we have added a suggested lawn size.

    Our reviews

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    Preparing Your Garden for Spring: Essential Jobs to Do Now

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    Electric vs Petrol Lawn Mowers in Cold Weather

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    Our Promise

    90 day guarantee

    Changed your mind? Just let us know within 90 days—as long as the item’s unused, in original packaging, and you have your order or invoice number, we’ll sort it. Email us to arrange the return. Once we’ve received and checked the item, we’ll refund you to your original payment method.

    Price match promise

    At Mowers‑Online, we want you to get the best deal. If you spot the exact same product for less elsewhere, just email us the details—and we’ll match the price. It’s simple, fair, and designed to save you money.

    Finance available

    Changed your mind? Just let us know within 90 days—as long as the item’s unused, in original packaging, and you have your order or invoice number, we’ll sort it. Email us to arrange the return. Once we’ve received and checked the item, we’ll refund you to your original payment method.
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