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The 5 Best Petrol Lawn Mowers for Powerful Cutting

Best petrol lawn mowers guide
(Image credit: Amazon)

The best petrol lawn mowers are powerful and easy to use, making them a great addition for homeowners with medium and larger-sized gardens.

Because petrol mowers are generally more powerful than cordless (battery-powered) and corded (electric) mowers, this means you'll be spending less time mowing so you can focus on the more fun elements on your garden design

An unavoidable condition of buying a petrol mower is that they require some maintenance, not to mention the extra cans of petrol. But the benefits are vast: they generally deliver great cut quality and impressive, neat finishes, and feature designs to improve manoeuvrability and storage ease. Furthermore, they're not constrained by power cables.

There's several features to consider before you buy, and we've done the hard work for you. These are the five best petrol lawn mowers available now.

The Best Petrol Lawn Mowers

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 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. 


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.


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 (opens in new tab) 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. 


Webb Supreme WERR17SP

(Image credit: Webb)

4. Webb Supreme WERR17SP

The best for professional-looking stripes

Specifications

Engine size: 140cc
Weight: 35.7kg
Cutting width: 43cm
Cutting heights: 23-77mm
Drive type: Push & self-propelled
Mulching: Yes
Grass box capacity: 60L
Lays stripes: Yes

Reasons to buy

+
Cuts immaculate stripes
+
Durable chassis

Reasons to avoid

-
Not as efficient on smaller gardens

This self-propelled version of the Webb Supreme WERR17SP is one of the best petrol lawn mowers if you want to cut professional-looking stripes into your lawn.

It utilises a split rear roller for easy turns so it's effective at creating immaculate stripes, most practically on medium lawn sizes (and even some larger gardens). It also features six cutting heights, which are easily adjustable through a lever. 

It can mulch too, and its 3-in-1 versatility means you can either cut & collect, cut & discharge or cut & mulch. And the chassis is made with ABS polymer so it's robust and durable. if that's not enough, it folds into a compact size for easy storage. 


Honda Izy HRG 416 PK

(Image credit: Honda)

5. Honda Izy HRG 416 PK

The best push drive mower

Specifications

Engine size: 160cc
Weight: 29kg
Cutting width: : 41cm
Cutting heights: 20-74mm
Drive type: Push
Mulching: No
Grass box capacity: 50L
Lays stripes: No

Reasons to buy

+
Quiet
+
Auto choke system
+
Durable steel cutter deck

Reasons to avoid

-
No self-propulsion

Honda's reliable engine is a major plus of the HRG 416 PK, and the powerful four-stroke GCVx engine is easy to start. This is aided by an auto choke system to ensure a quick start even in cold weather.

There's no self-propulsion, but at 29kg it's relatively lightweight to push around without too much effort.

A standout feature of the HRG 416 is how quiet it is, courtesy of a patented low noise blade, which your neighbours will appreciate!

Moreover, it's equipped with a sizeable 50L grass collector, six cutting heights ranging between 20-74mm, and a 0.91-litre unleaded fuel tank for lengthy sessions in larger gardens. 

What's more, it's been designed with durable steel cutter deck which is resistant to corrosion and UV ray deterioration, helping to ensure a lengthy service life. 


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 to Choose the Best Petrol Lawn Mower

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. 

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

There's a lot to consider when buying one of the best petrol lawn mowers, and the Homebuilding & Renovating team is getting hands-on experience with the products in this buying guide to help you feel confident in choosing the right mower for you.

In our ongoing independent reviews we are testing the ease of use, battery life, cutting power and noise to gauge each mower's efficacy, and assessing key factors including value for money and the fuel efficiency of each mower. We’re also reviewing everything in-between from the size of collection boxes to which households will most benefit from buying a specific petrol lawn mower.

Our team is passionate about DIY and home improvement (which probably won’t be a surprise) so we already have detailed knowledge about the brands that make these [products]. Moreover, we have taken into account user reviews when compiling this buying guide, and gleaned key information from our sister sites such as Real Homes and Ideal Home to help you find the best petrol lawn mower for your home.

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.