Best Petrol Rotary Mowers of 2025

Toby Butcher Avatar
Toby Butcher
Last Updated: 2 Feb 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Petrol rotary mowers are powerful machines that are designed to make lawn maintenance easier and more efficient. These mowers are ideal for larger gardens or lawns, as they can cover a larger area quickly and easily. With their powerful engines, they are able to cut through even the thickest grass with ease, leaving your lawn looking neat and tidy. Petrol rotary mowers are also highly manoeuvrable, making them perfect for navigating around obstacles like trees and flower beds. Whether you're a professional landscaper or a homeowner looking to maintain your lawn, petrol rotary mowers are a great investment that will save you time and effort in the long run.

At a Glance: Our Top Picks

Mountfield SP41 Self-Propelled Petrol Lawnmower Cover #TOP 1
Mountfield SP41 Self-Propelled Petrol Lawnmower
ftb score rating icon 9.9
Webb WER410SP Self Propelled Lawnmower Cover #TOP 2
Webb WER410SP Self Propelled Lawnmower
ftb score rating icon 9.8
Hyundai 20" Electric-start Self-propelled Lawnmower Cover #TOP 3
Hyundai 20" Electric-start Self-propelled Lawnmower
ftb score rating icon 9.6

Top 10 Petrol Rotary Mowers

#TOP 1

Mountfield SP41 Self-Propelled Petrol Lawnmower

SP41 - ST 120 (123cc OHV)
red,grey,black
2021
Mountfield SP41 Self-Propelled Petrol Lawnmower Cover
Mountfield SP41 Petrol Lawnmower, Self-Propelled, 39cm cutting width, 123cc ST120 Autochoke petrol engine, Up to 250m², Includes 40L Grass Collector

The Mountfield SP41 Lawnmower is an easy-to-use, self-propelled mower perfect for small to medium-sized gardens. With a 39cm cutting width and adjustable cutting height, you can achieve a tailored lawn finish that suits your needs. Its lightweight chassis allows for excellent manoeuvrability, making the mowing process less strenuous for you. The 40L grass collector is simple to remove and empty, helping to keep your garden tidy without hassle.

What We Like
Self-propelled for ease of use
Adjustable cutting height options
Lightweight for easy manoeuvrability
Large grass collector capacity

Webb WER410SP Self Propelled Lawnmower

WER410SP
green,grey,black
Webb WER410SP Self Propelled Lawnmower Cover
Webb WER410SP 16”/41cm Self Propelled Rotary Petrol Lawnmower, 132cc 4-Stroke Engine, 7 Cutting Heights, 45L Collection Bag – 3 Year Guarantee

The Webb WER410SP Lawnmower is a lightweight, self-propelled mower ideal for smaller lawns. Its 132cc 4-stroke engine ensures easy starting and smooth operation, allowing you to mow with minimal vibration and low fuel consumption. With seven cutting heights, you can easily adjust the blade for grass lengths between 25mm and 75mm, giving you flexibility for different lawn types. The large 45-litre collection bag means you can mow for longer without needing to stop and empty it, enhancing your mowing efficiency.

What We Like
Lightweight and manoeuvrable design
Easy-start, robust engine
Adjustable cutting heights
Large collection bag

Hyundai 20" Electric-start Self-propelled Lawnmower

HYM510SPE
Blue
Hyundai 20" Electric-start Self-propelled Lawnmower Cover
Hyundai 20"/51cm 196cc Electric-start Self-propelled Petrol Lawnmower, 6 Cutting Heights, Large 70l Grass Collector, Foldable Handles, 3 Year Warranty

The Hyundai Self-propelled Lawnmower is perfect for medium to large lawns, featuring a 508mm cutting width that ensures efficient mowing. Its powerful 196cc 4-stroke petrol engine offers easy starting and excellent fuel efficiency, giving you peace of mind while you work. With electric-start functionality and a recoil backup, you can start mowing at the push of a button, making your gardening tasks simpler. Plus, the self-propelled feature allows you to select from four walking speeds, allowing you to mow with ease and comfort.

What We Like
Easy electric-start engine
Self-propelled for convenience
Adjustable cutting heights
Large grass collector
#TOP 4

Webb WER510SP 20" Self Propelled Lawnmower

WER510SP
green,grey,black
Webb WER510SP 20" Self Propelled Lawnmower Cover
Webb WER510SP 20"/51cm Self Propelled Rotary Petrol Lawnmower, 173cc 4-Stroke Engine, 7 Cutting Heights, 65 Collection Bag - 3 Year Guarantee

The Webb WER510SP Lawnmower is a powerful self-propelled mower, perfect for large lawns and rough terrain. Its robust 173cc 4-stroke engine ensures smooth operation and reduces vibration, making your mowing experience comfortable. With seven cutting heights ranging from 25mm to 75mm, you can easily adjust the blade to achieve the perfect lawn length. Additionally, the large 65-litre collection bag allows you to mow for longer without frequent emptying, enhancing your efficiency in maintaining your garden.

What We Like
Self-propelled for easy use
Powerful, low-vibration engine
Adjustable cutting heights
Large collection bag
Efficient for large lawns

Einhell GC-PM 40/2 S Self-Propelled Lawn Mower

3404823
Red & Black
Einhell GC-PM 40/2 S Self-Propelled Lawn Mower Cover
Einhell Self-Propelled Petrol Lawn Mower GC-PM 40/2 S | 40cm Cutting Width Lawnmower For Gardens Up To 1000m2 | 2kW 4-stroke OHV Engine, 7 Level Cutting Height Adjustment, 45L Grass Box

The Einhell GC-PM 40/2 S Mower is designed for medium to large gardens, offering a powerful 2 kW 4-stroke engine that makes mowing effortless. Its 40 cm cutting width allows you to tackle expansive areas quickly. You can easily adjust the cutting height in seven steps, ensuring a customised cut for your lawn. The large 45-litre grass collection sack means less frequent emptying, making your mowing experience more efficient and convenient.

What We Like
Powerful 2 kW engine
Adjustable cutting height
Large grass collection sack
Suitable for large gardens
Lightweight and manoeuvrable

Mountfield SP42 Self-Propelled Petrol Mower

red,grey,black
Mountfield SP42 Self-Propelled Petrol Mower Cover
Mountfield SP42 Four-Wheeled Self-Propelled Petrol Rotary Mower 41cm

The Mountfield SP42 Mower is equipped with a powerful STIGA ST120 Autochoke 123cc petrol engine, providing you with reliable performance for your lawn care needs. Its self-propelled feature means you can manoeuvre easily without straining yourself. With a cutting width of 41cm, this mower efficiently tackles various grass lengths. Additionally, the 60-litre textile hybrid grass collector comes with a bag full indicator, allowing you to focus on mowing without constantly checking if the collector needs emptying.

What We Like
Powerful petrol engine
Self-propelled for easy use
Wide cutting width
Large grass collector
#TOP 7

Hyundai Self-Propelled Electric-Start Lawnmower

HYM430SPE
Blue
Hyundai Self-Propelled Electric-Start Lawnmower Cover
Hyundai 17"/42cm 139cc Electric-Start Self-Propelled Petrol Lawnmower with 3 Year Warranty, Blue

The Hyundai Electric-Start Lawnmower is perfect for small to medium lawns, featuring a 430mm cutting width that ensures efficient mowing. Its powerful 139cc four-stroke petrol engine offers effortless starting, allowing you to get to work without any hassle. With the convenient electric-start and recoil backup, you can start the mower at the push of a button, making it incredibly user-friendly. The self-propelled design means you won’t have to push; simply steer the mower as it moves along, making lawn maintenance a breeze.

What We Like
Easy electric start
Self-propelled for convenience
Efficient 17" cutting width
Low fuel consumption
#TOP 8

Hyundai 18" Electric-start Self-propelled Lawnmower

HYM460SPE
Blue
Hyundai 18" Electric-start Self-propelled Lawnmower Cover
Hyundai 18"/46cm 139cc Electric-start Self-propelled Petrol Lawnmower, 6 Adjustable Cutting Heights, Large 70l Grass Bag, Foldable Handles, 3 Year Warranty

The Hyundai Lawnmower features an 18-inch cutting width, making it suitable for medium to large lawns. Its 139cc 4-stroke petrol engine ensures easy starting and low fuel consumption, providing you with a hassle-free mowing experience. The electric-start option allows you to get going at the push of a button, while the self-propelled design means you only need to steer, eliminating the effort of pushing. With six adjustable cutting heights, you can achieve the perfect finish for your lawn, tailored to your preferences.

What We Like
Easy electric starting
Self-propelled for convenience
Adjustable cutting heights
Large grass collector bag
Compact and foldable handles
#TOP 9

Webb WER18HP4 18" Push Petrol Lawnmower

5055661904520
Webb WER18HP4 18" Push Petrol Lawnmower Cover
Webb WER18HP4 18"/46cm Push Rotary Petrol Lawnmower, 140cc 4-Stroke Engine, 8 Cutting Heights, 65L Collection Bag - 3 Year Guarantee

The Webb WER18HP4 Lawnmower is a robust choice for small lawns, offering excellent manoeuvrability and a strong steel cutter deck that withstands rough terrain. With its reliable 125cc engine, you can expect easy starts and lower fuel costs. You can adjust the cutting height easily with eight settings, allowing you to tackle grass of varying lengths. The large 65L collection bag fills efficiently, meaning fewer trips to empty it and more time mowing.

What We Like
Strong steel cutter deck
Easy start 125cc engine
Eight cutting height settings
Large 65L collection bag

Hyundai 196cc Self-Propelled Petrol Lawnmower

HYM510SP
Blue
HYM510SP
Hyundai 196cc Self-Propelled Petrol Lawnmower Cover
Hyundai 196cc Petrol Lawnmower, 20" 51cm 4 Stroke, Self Propelled Petrol Mower, Easy Starting with Six Cutting Heights, 70L Grass Bag & 3 Year Warranty

The Hyundai Petrol Lawnmower features a powerful 196cc 4-stroke engine, ensuring easy starting and efficient fuel consumption, making it ideal for regular lawn maintenance. With a generous 20-inch cutting width, you can cover medium to large lawns quickly. The self-propelled design means you won't have to exert yourself pushing it; simply steer for effortless manoeuvrability. Additionally, the six adjustable cutting heights allow you to achieve the perfect finish, tailored to your lawn's needs.

What We Like
Easy starting engine
Self-propelled for convenience
Wide cutting width
Adjustable cutting heights
Large grass collector bag
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is a petrol rotary lawn mower?

The petrol rotary lawnmower is the iconic machine that most of us recognise as a 'proper' lawnmower. They are designed to cover a range of grass-cutting tasks rather than specialising in one particular area of lawn-care making them suitable for almost all homeowners.

2. Which is better cylinder or rotary mower?

A quality cylinder lawnmower can 'shave' as close as 3/16” and can be raised up to about an inch without too much loss of mowing quality. A typical rotary lawnmower on the other hand won't go much below 1/2” and can be raised up to perhaps 3” or even 4” without deterioration in cut.

3. Is a rotary mower better?

It's much more precise and even. There's no tearing or ripping. Rotary mowers are like throwing a knife at your lawn, as opposed to the scissor-like precision of a reel mower. The push reel mower will cleanly slice through your grass, giving it an overall tidier look than rotary lawn mowers.

4. How much does a rotary mower cost?

The average price of a lawn mower is $1,068. That overall average price includes reel mowers with an average cost of $104, walk-behind mowers with an average cost of $363, riding mowers with an average cost of $2,450, and robot lawn mowers with an average cost of $1,470.

Editor's Notes

During our petrol rotary mower research, we found 132 petrol rotary mower products and shortlisted 10 quality products. We collected and analyzed 16,489 customer reviews through our big data system to write the petrol rotary mowers list. We found that most customers choose petrol rotary mowers with an average price of £337.91.

The petrol rotary mowers are available for purchase. We have researched hundreds of brands and picked the top brands of petrol rotary mowers, including Mountfield, Webb, Hyundai, Einhell.

Written by
Toby Butcher Avatar

Toby Butcher is a Horticulturist, and he earned his title as a Master Gardener in 2016. Toby has acquired a 25-year experience as a home gardener planting, designing, grooming vegetables and flowers. He is the leader of a plant group in Durham. Toby owns a blog where he publishes articles on growing and growing your flowers at home, in a vase, or in a garden.