The best petrol lawn mowers for all kinds of gardens

Best petrol lawn mowers guide
(Image credit: Amazon)
Best petrol lawn mowers: Quick menu
(Image credit: Amazon)

1. The list in brief  
2. Best self-propelled: Hyundai HYM510SP
3. Best for large gardens: Cobra MX534SPH
4. Best budget mower: Mountfield HP41
5. Best for professional stripes: Hayter Harrier 56
6. Best for small gardens: Webb WER410HP Lawnmower
7. Best lightweight mower: Yard Force Hand Push Mower
10. FAQs
11. How we test

The best petrol lawn mowers are powerful, easy to use and will give a professional looking finish for medium and larger-sized gardens. In addition, they should be easy to start first time and feature grass cutting bags that offer good capacity so you won't be constantly emptying them. 

Petrol mowers are typically more powerful than the best cordless lawn mowers (battery-powered) and corded (electric) mowers, meaning that you'll be spending less time mowing. However, an unavoidable condition of buying a petrol mower is that they require some maintenance, not to mention the extra cans of petrol. 

That said, the benefits are vast: they deliver great cut quality and impressive, neat finishes with smart grass patterns if that's your thing. And of course you are not restricted by a power cable. 

Here we've done the hard work for you, choosing rated petrol mowers and including some of the top deals on the best mowers out there at the moment.

The Quick List

Short on time to search for best petrol lawn mowers for you? Fear not — we've put together a speedy overview of all the mowers on this list, along with handy quick links that allow you to skip down the page to get right into a more detailed review of the particular product that you like the look of. 


Best self propelled lawn mower

Hyundai HYM510SP

(Image credit: Hyundai )

1. Hyundai HYM510SP

The best self propelled lawn mower

Specifications

Engine size: 196cc
Weight : 38.7kg
Cutting width: 51cm
Cutting heights: 25-75mm
Drive type: Self-propelled
Mulching: Yes
Grass box capacity: 70L
Lays stripes: No

Reasons to buy

+
Fuel efficiency
+
Easy to start and use
+
Quick release grass box
+
Easy to store

Reasons to avoid

-
Could be slightly sturdier
-
Heavy

The low-maintenance, high-performance Hyundai HYM510SP is the best self-propelled petrol mower. 

It features six easily adjustable cutting heights, ranging between 25-75mm, and good cutting width for large gardens. It's easy to start, which is achieved through a contactless ignition system, and being able to control the large rear wheels from the rear mounted handle makes it easy to use. 

Plus, Hyundai's four-stroke engine not only improves the torque but is designed to reduce noise and air pollution, making it an economic and low-emission mower. 

The huge 70L grass collection box has a quick release, allowing you to easily empty your glass without spillage. And for easy storing the handles can fold down over the mower. 


Best for large gardens

Cobra MX534SPH

(Image credit: Cobra)

2. Cobra MX534SPH

The best mower for very large gardens

Specifications

Engine size: 167cc
Weight: 38kg
Cutting width: 52cm
Cutting heights: 25-75mm
Drive type: Self-propelled
Mulching: Yes
Grass box capacity: 65L
Lays stripes: No

Reasons to buy

+
4-speed self-propulsion system
+
Easy to start
+
Multiple mulching options
+
Fuel efficiency

Reasons to avoid

-
Noisy
-
Heavy

The four-stroke engine on the Cobra MX534SPH is an immediate positive for enhanced fuel efficiency, and a second positive is that it uses a Honda GCVX170 engine, which is very reliable. 

It's easy to start this mower courtesy of a cord attached to one side of the handlebar, and the four-speed self-propulsion system means the machine works at your preferred pace (you can select walking pace or brisk walk, for example, with the latter really taking the strain off mowing larger lawns).

Another great feature is that you can mulch in three different ways, either conventionally through the 65L glass collector, or downwards so your grass cuttings are ejected back out onto your lawn, or sideways through an included chute.

In truth, there aren't too many differences between this mower and the Hyundai HYM510SP. Both feature similar cutting lengths and heights, and both leave a brilliant finish too, even on long or damp grass. The only negative that keeps the Cobra off the top spot is that the engine is pretty loud.


Best budget mower

Mountfield HP41

(Image credit: Mountfield)

3. Mountfield HP41

The best budget mower

Specifications

Engine size: 123cc
Weight: 19kg
Cutting width: 39cm
Cutting heights: 25-70mm
Drive type: Push & self-propelled
Mulching: No
Grass box capacity: 40L
Lays stripes: No

Reasons to buy

+
Affordable
+
Auto choke engine
+
Lightweight

Reasons to avoid

-
Not suited to large gardens

If you're after a budget-friendly petrol mower for a slightly smaller garden then the Mountfield HP41 is a great option. We're reviewing the push drive model, but a self-propelled version is also available. 

With a 39cm cutting width, the Mountfield HP41 is suitable for mowing small-to-medium-sized gardens and lawns, and features five cutting height positions between 25-70mm. 

The tough polypropylene chassis is an especially strong benefit. Not only does this material help to prevent the machine from rusting, but it helps to make the mower lightweight, making it easy to manoeuvre. 

It starts really quickly too, which is aided through being powered by an auto choke engine. And to store away, simply fold down the handle. Easy. 

Read our full Mountfield HP41 review.


Best for professional stripes

Hayter Harrier 56 Self Propelled Pro Rear Roller Lawnmower

(Image credit: Hayter )

4. Hayter Harrier 56 Pro Rear Roller Lawnmower

The best for professional-looking stripes

Specifications

Engine size: 190cc
Weight: 59kg
Cutting width: 56cm
Cutting heights: 13-60mm
Drive type: Self-propelled
Mulching: No
Grass box capacity: 70L
Lays stripes: Yes

Reasons to buy

+
Great striped lawn results
+
Seven height settings
+
Ideal for larger gardens

Reasons to avoid

-
Very heavy
-
Expensive

The two things you'll likely immediately notice about the Hayter Harrier 56 are its price and its weight. But this is a machine with one very notable selling point: it is the best machine around if you want to cut professional-looking stripes into your lawn.

The massive 56cm cutting deck (the largest on this list) and 70L grass box collector (joint-largest) means this is a mower well suited to large lawns, and the seven height settings provide good versatility for finish options. 

The 52cm real roller and automatic speed control means you can lay a pristine lawn stripe, especially with the cutting height going down to just 13mm.

Be careful using this machine, though. Even though it is suitable for domestic use many homeowners may struggle to use it given its weight.


Best for small gardens

petrol lawn mower

(Image credit: Amazon UK)

5. Webb WER410HP 16"/41cm Push Rotary Petrol Lawnmower

Best for small gardens

Specifications

Engine size: 132cc
Weight: 24.5kg
Cutting width: 41cm
Cutting heights: 25mm to 75mm
Drive type: Manual
Mulching: No
Grass box capacity: 45L
Lays stripes: No

Reasons to buy

+
Value for money
+
Seven cutting heights
+
Easy start

Reasons to avoid

-
Smaller cuttings bag

If you are after a value-for-money petrol lawn mower from a well-known brand then the Webb WER410HP 16"/41cm Push Rotary Petrol Lawnmower is well worth considering. 

Don't be put off this model due to the fact that it is push operation — it is lightweight and easy to manoeuvre. That said, those with very large areas of lawn to mow might find the 45L capacity of the grass box capacity to be a little on the small side.

Users praised this mower for how easy it was to put together and its ability to deal with even pretty long and overgrown patches of grass. It was also given extra marks for its low vibration levels, how well it works on wet grass and for the fact that its cord pull is smooth and easy to use. 


Best lightweight mower

best petrol lawn mower

(Image credit: Amazon UK)

6. Yard Force 40 cm Hand Push Petrol Lawnmower

Lightweight and under £200

Specifications

Engine size: 125cc
Weight: 19.2
Cutting width: 40cm
Cutting heights: 25mm-75mm
Drive type: Manual hand push
Mulching: No
Grass box capacity: 45L
Lays stripes: No

Reasons to buy

+
Lightweight
+
Budget-friendly
+
Easy to assemble

Reasons to avoid

-
Taller users found the handle a little low

At under £200 this is a brilliant option for those on a budget looking for a good-quality, easy-to-use petrol lawnmower. The body of this mower is plastic, contributing to how lightweight – and therefore easy to manoeuvre – it is. Despite being made from plastic, the mower is still robust and sturdy.

Five cutting heights and a comfortable soft-grip handle make it a pleasure to use although it is worth noting that some users of over 6ft reported finding the handle a little on the low side — something to consider. 

Being a manual lawn mower and with a cutting width of 40cm, this is probably a machine best suited to those cutting smaller areas of grass. 


FAQs

What are the benefits of petrol lawn mowers?

There are three types of power your lawn mower can run on: petrol, corded (electric) and cordless lawn mowers (battery-powered), and all come with their pros and cons.

Petrol lawn mowers are generally much more powerful than their counterparts, which means faster completion times, and because they are mostly self-propelled, they are easy to start and to use. 

Because of their power, petrol lawn mowers are also more suited to cutting medium-to-large gardens, whereas cordless and corded mowers are better for smaller lawns. Petrol mowers aren't constrained by power cords either. 

How do I choose the best petrol lawnmower?

These are some factors to consider when buying the best petrol mower to ensure you get the best value for your money and the most optimal machine for your garden. 

Size of lawn

This should be a primary consideration. Because the cutting widths of mowers will differ, some mowers will be more effective on larger gardens than on smaller gardens, and vice versa. 

Before you buy, make a rough estimation of how many square metres (sqm) of your lawn will need to be maintained: if your garden is between 50-150sqm then this is generally considered to be small to medium, while more than 150sqm is considered large.

Collection

The larger your collection bag, the longer you can mow for. Therefore buying a mower with a larger bag (50L and above is best for larger gardens) will prove valuable. If you want to use your grass cuttings to fertilise your remaining gras then look out for a mower with mulching capability. 

How do petrol lawn mowers work?

The easier your mower is to start, the better. Keep a look out for machines that come with electric start or electric key starts, which are more time-efficient, but will cost more.

Self-propelled or push drive?

Self-propelled mowers are easier to work, making them suitable for large lawns and inclined areas. Because they propel themselves forward, you don't need to put as much time and effort into mowing - all you have to do is control the direction.

Push drive mowers don't have the control or ease of use, but they are generally much cheaper and well suited to smaller or medium-sized gardens. 

Which is better — a 2 or 4 stroke lawn mower?

Two strokes engines are less complicated than a four stroke so are cheaper to manufacture, which means they are typically cheaper to buy. As they have less parts they are typically lighter and cost less to repair.

But four stroke engines are typically more reliable, less noisy and more fuel efficient. 

How do you service a petrol lawn mower?

Petrol lawn mowers require a certain level of maintenance, primarily through checking and changing the oil. It's best to do this as soon as you begin mowing in the spring or summertime, and once a month throughout the summer. 

Always use the fuel and oil recommended by the engine manufacturer, and be sure to store your fuel in a sealed fuel can and keep it in a cool, dry, place.

You'll also need to clean your mower every so often to remove any grass or debris from the blades or underneath the mower. A small brush is handy for cleaning tighter spaces. An important note: make sure to completely switch off your lawn mower before cleaning. 

Lastly, it's beneficial to check your spark plugs every so often to ensure they don't become too dirty — every 25 hours is recommended, although an indication they need cleaning is that the lawn mower will be harder to start.

How we test petrol lawn mowers

You can trust Homebuilding & Renovating. Our expert reviewers spend hours testing and comparing products and materials in order to help you choose the best for your home and garden. Find out more about how we test.

Here at Homebuilding.co.uk we like to get our hands dirty and trial as many products as possible, but in the instances where we aren’t able to, such as with the best petrol lawn mowers, we leave no stone unturned to provide you with the crucial information you need to know before buying. Our team is passionate about DIY and home improvement (which probably won’t be a surprise) so we already have knowledge about the brands that make these lawn mowers. Moreover, we have taken into account user reviews when compiling this buying guide. There's a lot to consider to ensure you buy the best petrol lawn mower, and we’ve scanned the pros and cons of each model in this buying guide to ensure you feel confident in choosing the right product for your home. 

David Hilton
David Hilton

David is a renewables and ventilation installer who is passionate about testing new tools. He has reviewed the Mountfield HP41 Hand Propelled Petrol Lawnmower Review for Homebuilding & Renovating, which he described as having a cut that is "incredibly smooth, and there is plenty of torque in the engine for thicker grass patches and tufts of weeds."


Jack Woodfield
News Editor

Jack has worked in journalism for 11 years and is the News Editor for Homebuilding & Renovating, a role he has had since 2019. He strives to break the most relevant and beneficial stories for self builders, extenders and renovators, including the latest news on the construction materials shortage and hydrogen heating. In 2021 he appeared on BBC's The World at One to discuss the government's planning reforms. 


He enjoys testing new tools and gadgets, and having bought his first home in 2013, he has renovated every room and recently finished a garden renovation.