5 Best Steep Slope Lawn Mowers of 2024

Written by: - Landscape Gardener

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The Best Steep Slope Lawn Mowers

The Best Lawn Mowers For Steep Slopes
  1. Best lawn mower for steep slopes - Hyundai 4-Stroke Self Propelled Petrol Lawn Mower

  2. Best for small gardens - Webb Classic Self Propelled Petrol Mower

  3. Best for large gardens - Murray EQ2-500X Self-Propelled Petrol Lawnmower

  4. Best cutting height range - Sprint 420SP Self-propelled Petrol Lawn Mower

  5. Best lightweight option - Mountfield SP41 Self Propelled Petrol Lawnmower

Steep Slope Lawn Mower Reviews

Editors Choice
  • Copes well with cutting different types of grass because of the power and adjustable cutting heights
  • Self-propulsion feature is optional which makes it easier to mow around small obstacles and tight corners
  • Can be used to mulch dead leaves as well as grass which can be collected and used as compost
  • Comes with engine oil included so you only need to provide the fuel yourself
  • The grass box doesn’t miss any grass when collecting
  • Has a nice wide cutting width of 51 cm

  • There’s no back roller so it won’t create a clear striped lawn effect
  • Only one self propelled speed so the options for self propulsion are ‘off’ or ‘on’
Weight
38.7kg
Power
196cc
Cutting Width
51cm
Cutting Heights
25-75mm
Collection Bag
70 L
Overall Score 4.9Read In-depth Review
Manoeuvrability
4
Design
5
Power
5
Performance
5
Features
5
Safety
5
Value for Money
5

The Hyundai 4-Stroke Self Propelled Petrol Lawn Mower is my top recommendation if you’ve got a steep slope in your garden. It also boasts a range of features that make it a good choice for gardeners with a larger outdoor space and the need for more power. 

It has a 196 cc engine that gives it enough power to get up steeper slopes. It also has a 51 cm cutting width, which can save you time if you’re mowing a larger lawn. The self propulsion feature means it feels lightweight when in use, but this feature is optional. This means that if you’re working around small obstacles or tight corners, it can be switched off so you can move at a slower pace. 

It’s worth mentioning that Hyundai doesn’t recommend using this mower on inclines greater than 15%. Having said that, some of the banks I tested this mower on were probably steeper than that, and the mower handled them very well. 

It cuts well across all grass types – from short, regularly cut grass to longer, denser areas. There’s 6 height settings, ranging from 25 mm to 75 mm, which is fairly standard amongst petrol mowers. The wheels are closely aligned with the cutting deck which means it’s easy to mow in straight lines and to the edges. 

Unboxing and assembly is quick and simple. It took just a few minutes to get this mower ready to go, and everything fitted together very easily. 

You’ve got a few options when it comes to grass clipping disposal. It comes with a polyester grass collector bag included, as well as a level indicator which will tell you when the bag is full. You can also mulch the clippings if you’re wanting to add more nutrients to the lawn. 

A final thing to note is that it runs quieter than other petrol models on the market, which was a pleasant surprise!

At 38.7 kg, this mower is heavy. If you’ve got a long distance between storage and lawn, you may prefer a different machine. 

After just one use I was convinced by the power and versatility of this machine. If you’ve got a garden with a steep slope that you struggle to mow, I wouldn’t hesitate to recommend it!

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Runner Up

2. Webb Classic Self Propelled Petrol Mower

Best for small gardens

best lawn mowers for steep slopes Webb Classic Self Propelled Petrol Mower
  • Good for all lawn sizes as offers a good compromise between weight and manoeuvrability
  • Self-propulsion can be deactivated to make it easier to get into smaller areas or around obstacles
  • Ball bearings in the wheels help them move more easily even when the self propulsion isn’t on
  • Can dramatically reduce mowing time, cutting lawns in ⅓ of the time of standard mowers

  • The wheels stick out which means that it is more like 44 cm wide, even though the cutting width is 41 cm
  • A funnel is required to fill up the oil tank as it is in a position that is difficult to reach
Weight
28kg
Power
132cc
Cutting Width
41cm
Cutting Heights
25-75mm
Collection Bag
45 L
Overall Score 4.7Read In-depth Review
Manoeuvrability
5
Design
4
Power
5
Performance
5
Features
4
Safety
5
Value for Money
5

Webb is a British brand that specialises in quality machinery. Their Webb Classic Self Propelled Petrol Mower has been designed for small to medium size gardens and lawns. Its self-propulsion however, gives it ample power to get up steeper slopes. I was lucky enough to put this machine to the test!

Webb Classic Self Propelled Petrol Mower for steep slopes

It’s fueled by a 4-stroke 132cc engine, which is pretty powerful! It could deal with large lawns as well as small, although it’s limited by its annoyingly small grass collection bag, which is just 45 L. However, it certainly has the power to tackle larger areas, and I tested it on wet grass as well as dry. It performed equally well on both.

I then gave it a try on a steeper slope, an incline of around 20%. This mower coped very well without any issues, even when mowing uphill with an almost-full bag. It produced a neat, clean result no matter the slope or grass conditions. 

One thing to note is that the self-propelled speed on this mower is fast! It may be too fast for some people. If you’re able to keep up, it’ll save you a huge amount of time, but gardeners who like to move at a more leisurely pace can slightly release the throttle to slow it down.

At 28 kg, it’s not too heavy. I found it fairly easy to manoeuvre in and out of storage. 

Specific features include 7 different cutting height settings and a 41 cm cutting width. The heights range from 25 mm to 75 mm, while the cutting width makes it narrow enough to navigate obstacles. 

A couple of negatives to note. The first is that there is no indicator to tell you when the collection bag is full, so you may waste time checking. The design of the collection box isn’t great, and you may find you spill some clippings as you disconnect it from the mower. 

Although marketed towards small to medium size gardens, I would not hesitate to recommend this mower to those with larger lawns too. It did a fantastic job on all grass types, and mowing on steep inclines too. 

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Also Good
  • Assembly instructions are simple and clear with just a few steps - takes around 20 minutes to assemble
  • Wide 51 cm cutting width means it’s a good choice for larger gardens
  • Grass bag is a spacious 75 L and has both a dust shield and fill level indicator so you’ll know when it needs emptying
  • Handles slopes very well thanks to the powerful motor

  • Doesn’t start very well from cold, multiple pulls may be needed
  • Height adjustment needs to be done at both the front and rear of the mower, as opposed to just one single lever
Weight
29 kg
Power
140cc
Cutting Width
51 cm
Cutting Heights
25-75 mm
Collection Bag
75L
Overall Score 4.7
Manoeuvrability
4
Design
4.5
Power
4.5
Performance
5
Features
5
Safety
5
Value for Money
5

Manufactured in the USA, Murray lawn mowers are known for being hardy and durable. The Murray EQ2-500X Self-Propelled Petrol Lawnmower is a great choice if you’ve got some steeper hills in your garden.  

This mower is powered by a reliable, high-performance Briggs & Stratton 140 cc engine. It runs at 2900 RPM and is self-propelled so feels lightweight when in use. During testing, I found it relatively easy to get up steep hills. 

Specific features include 6 height adjustment options, ranging from 25 to 75 mm. You can dispose of the clippings either in the grass bag, out the side or rear, or by mulching them, and returning them into the grass. 

It’s been designed primarily for larger gardens, although it’s manoeuvrable enough for smaller spaces too. There’s a 75 L grass bag and 51 cm cutting width, so you can move across large stretches of lawn very efficiently. The grass bag has a level fill indicator, so you’ll be able to see at a glance when it needs emptying. 

One pleasant surprise is that this mower isn’t too noisy. For a large and powerful machine, I’d expect it to make a bit more of a noise, so that was another nice surprise. 

It’s worth mentioning that the build quality is also very impressive. It has a durable alloy steel deck and it feels good quality. 

There’s not much to criticise about this mower! One thing worth mentioning is that adjusting the cutting height needs to be done at both the front and rear of the mower, while most petrol mowers have just one single lever. While still very easy to adjust, it’s not as efficient as a single lever. 

It also doesn’t start particularly well from cold. I found that multiple pulls were needed. 

All in all, I’d happily recommend this Murray model as a great option for gardens with hills. Its easy manoeuvrability makes it a more versatile option than other petrol powered mowers. 

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4. Sprint 420SP Self-propelled Petrol Lawn Mower

Best cutting height range

best lawn mowers for steep slopes Sprint 420SP Self propelled Petrol Lawn Mower
  • Self-propelled function is a good speed for most gardeners and makes the mower easier to control
  • Lightweight for a petrol mower at 25.2 kg
  • Easy to assemble in around 10 minutes
  • Cutting height and handle are easy to adjust using separate levers

  • Grass bag can be difficult to attach to the frame, needs to be stretched into place
Weight
25.2 kg
Power
125cc
Cutting Width
42 cm
Cutting Heights
28-92 mm
Collection Bag
60L
Overall Score 4.4
Manoeuvrability
4.5
Design
4.5
Power
4
Performance
4.5
Features
4
Safety
5
Value for Money
4.5

The Sprint 420SP Self-propelled Petrol Lawn Mower is a great mid-range petrol mower, designed to be used in both wet weather and dry. It’s self propelled and does a good job managing most garden slopes. It’s a powerful model, with a Briggs & Stratton 300E Series Engine.

This mower has 6 cutting height positions so it can be used year-round and to cut any type of grass. During testing, I found it did a good job cutting both long and short grass, and there’s two levers that can be used to easily adjust the cutting height. 

The 42 cm cutting deck is a good size for most medium size gardens. it gives the user a fair amount of manoeuvrability around objects or trees, but it’s not so narrow that your efficiency is drastically compromised. 

It’s both comfortable and easy to use. At 25.2 kg, it’s one of the lighter petrol models on this list. This makes it fairly easy to move in and out of storage, while the handle bar can be adjusted to three different heights, so it suits most users. The handle can be folded down for easy storage in tighter areas too. 

You’ve got two options when it comes to grass collection. Either discharge the clippings or collect them in the 60 L grass bag. 

Perhaps the best thing about this mower is that it’s very easy to assemble. It can be put together in just 10 minutes, which is a huge benefit. 

I do have a couple of criticisms however. The first is that it’s difficult to attach the grass bag to the frame. It needs to be stretched into place. If you are planning on discharging the clippings this won’t matter, but it was frustrating. 

I’d also say that it lacks some of the features you might expect from a mower of this price. There’s no mulching feature or rear roller. While it’s a good quality model, mowers of a similar price tag do tend to offer more options. 

Having said that, if you’re after a lightweight, petrol powered mower that does a good job on most grass types and in most weathers, this model is a good choice.

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  • Lightest petrol mower featured here - easy to manage and manoeuvre
  • 39 cm cutting width is reasonably compact so good for smaller gardens and narrow pathways
  • Starts usually after just one or two pulls
  • Easy to assemble with no extra tools required

  • Self propulsion may be a little fast for some users
  • Made primarily from plastic so build quality doesn't feel as solid as other models
Weight
21 kg
Power
123cc
Cutting Width
39 cm
Cutting Heights
25-70 mm
Collection Bag
40L
Overall Score 4.3
Manoeuvrability
5
Design
4
Power
4
Performance
4
Features
4
Safety
5
Value for Money
4

Lightweight and compact, the Mountfield SP41 Self Propelled Petrol Lawnmower is ideal if you’ve got a smaller garden with a couple of slopes. While large petrol mowers can be too much for small gardens, this model is perfect. It weighs just 21 kg so it can be lifted pretty easily, and it has a 39 cm cutting width. In fact, it’s ideal if you’ve got a lot of trees, flower beds or narrow passages in your garden. 

Having said that, it still boasts enough power. It’s self-propelled, powered by a 123 cc petrol engine. I found it fairly easy to manoeuvre up gentle slopes and around corners. For gardens with shallower inclines, you shouldn’t have a problem, although another machine may be required for very steep slopes. 

This mower has 5 adjustable cutting height positions, ranging from 25 mm to 80 mm. 

The body of this mower is made primarily from plastic. While some gardeners prefer a metal body, polypropylene really helps to keep the weight down, and it also won’t rust. It’s very easy to store too, as the handles fold over. 

There’s a 40 L grass collector for clippings. If you’re mowing a small lawn this should be large enough, but you may need to stop and empty it if you’ve got a big garden. 

There’s a lot to love about this mower, and the only real criticism I have is that it’s not suitable for use on damp or wet grass. It becomes blocked quite easily, and doesn’t have the power of other models. The self propulsion is also quite fast – so elderly users or those who wish to move at a slower pace may find it moves too quickly. 

All in all however, this is a great budget model for those with smaller gardens who still want the power of a petrol model. Its power means it’s suitable for uneven or sloped ground, but it’s lightweight enough to easily carry from storage to lawn. 

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Product Tester

Landscape Gardener

Having a lawn mower that cuts crisp lines is one thing. Having a mower that can tackle steep slopes is another. I conducted a thorough test to find you the best lawn mower for steep slopes in your garden. I assessed each mower’s manoeuvrability, design, power, performance, features, safety, and overall value for money to identify the best mower at the lowest price. Here’s how I tested:

  • Manoeuvrability: To test manoeuvrability, I first assessed the weight of each mower. Mowers weighing less than 30 kg were given the best ratings, as this lower weight not only meant they were easier to manoeuvre but also meant you needed less force up steep inclines. 
  • Design: Design played a pivotal role in my assessment. Mowers with variable height settings ranging from 25 to 75 mm were favoured, as this flexibility allows for precise control when mowing on uneven surfaces. Additionally, models that featured a back roller earned higher ratings as these design elements helped to create crisp, defined lines on sloped terrain. Mowers were marked down on design if they claimed to be a certain width, but their wheels made them far wider, as this can be misleading.
  • Power: Power was a key factor in determining the suitability of lawn mowers for steep slopes. Models equipped with 4-stroke 132cc engines or higher received the highest ratings in this category. These engines provide the necessary torque and performance to navigate steep inclines with ease.
  • Performance: Performance on steep slopes was a crucial consideration. Mowers that demonstrated the ability to handle inclines of 15% or steeper received better ratings. This aspect is vital for ensuring a smooth and effective mowing experience on challenging terrain. 
  • Features: Features are an important aspect of any lawn mower because they can make or break user experience and functionality. Mowers with multiple self-propulsion speeds garnered higher ratings as this feature made it easier to ascend steep slopes without excessive force. The availability of an option to deactivate self-propulsion proved handy when manoeuvring around obstacles. Models with a wider cutting width, typically around 45 cm or more, received better ratings as they enable lateral mowing, making it both easier and safer when tackling inclines.
  • Safety: Safety features were of utmost importance when mowing on steep slopes. This category focused on safeguards against accidental start-up, blade safety mechanisms, and other safety measures that ensure user protection in challenging terrain.
  • Value for Money: I evaluated the overall value for money offered by each lawn mower, considering all the factors mentioned above. Models that excelled in manoeuvrability, design, power, performance, features, and safety while excelling in tackling steep slopes were considered the top choices for providing the best overall value for money.

Derek's Smart Buying Tips

  1. If you have a slope in your garden, a self-propelled petrol lawn mower will be most suitable. Petrol mowers save a lot of effort and help speed through the job. Anything over 170 cc will be a powerful machine, although engines upwards of 125 cc will still suit most medium and large gardens 
  2. For large gardens, go for a cutting width of 42 – 56 cm. For medium gardens, a cutting width of 30 – 40 cm is suitable. Stick to a narrower model if you’ve got a lot of obstacles or trees to navigate around.
  3. A collection box of at least 60 L is best for larger lawns, while a box of 40 L is better for smaller gardens. If you want to improve the health of your lawn, look for a mulching feature. This will chop the clippings and release them back onto the grass
  4. You’ll also want a few variable cutting heights. Mowers with a minimum cutting height of around 25 mm should be suitable for most UK lawns
  5. Depending on the layout of your garden, you may occasionally need to use your mower without the self propelled motor. This will be easier if the mower has large wheels and isn’t too heavy

Compare Product Features

Use the dropdown to sort the table by the feature you want to see.

  • Hyundai 4-Stroke Self Propelled Petrol Lawn Mower
    best lawn mowers for steep slopes Hyundai 4 Stroke Self Propelled Petrol Lawn Mower
    • 4.9
    • 38.7kg
    • 196cc
    • 51cm
    • 25-75mm
    • 70 L
  • Webb Classic Self Propelled Petrol Mower
    best lawn mowers for steep slopes Webb Classic Self Propelled Petrol Mower
    • 4.7
    • 28kg
    • 132cc
    • 41cm
    • 25-75mm
    • 45 L
  • Murray EQ2-500X Self-Propelled Petrol Lawnmower
    best lawn mowers for steep slopes Murray EQ2 500X Self Propelled Petrol Lawnmower
    • 4.7
    • 29 kg
    • 140cc
    • 51 cm
    • 25-75 mm
    • 75L
  • Sprint 420SP Self-propelled Petrol Lawn Mower
    best lawn mowers for steep slopes Sprint 420SP Self propelled Petrol Lawn Mower
    • 4.4
    • 25.2 kg
    • 125cc
    • 42 cm
    • 28-92 mm
    • 60L
  • Mountfield SP41 Self Propelled Petrol Lawnmower
    best lawn mowers for steep slopes Mountfield SP41 Self Propelled Petrol Lawnmower
    • 4.3
    • 21 kg
    • 123cc
    • 39 cm
    • 25-70 mm
    • 40L

How to Choose the Best Lawn Mower for Steep Slopes

Choosing a mower is a tough decision, let alone if you’ve got a steep slope in your garden to navigate. Most lawn mowers are not designed to tackle steep slopes, which can make it hard to get your lawn mown safely and neatly if you’ve got a slope in your garden. 

Not sure what to look for when it comes to the best lawn mowers for steep slopes? Take a look at this buyer’s guide. 

Why Buy a Self Propelled Lawn Mower?

Self propelled lawn mowers don’t require any pushing, and this is ideal if you’ve got a large garden or one on an inclined slope. Trudging a lawn mower up and down a hill can be exhausting and dangerous, and a self-propelled mower can make the process easier and safer. 

Self propelled lawn mowers are likely to produce a more even cut across difficult ground conditions. There will be less stopping and starting, as the mower simply moves at a consistent pace and the gardener walks behind it. 

A lot of self propelled lawn mowers offer various speed options. While you’ll likely want a faster speed for flatter, open areas, you’ll probably need to move slower up and down hills. Having an option to reduce the speed will make it easier and safer to mow up hills. 

Generally, the gardens that are best suited to self propelled mowers are those with slopes or large open areas. 

READ NEXT: The Best Self Propelled Lawn Mowers

Petrol vs Electric Lawn Mowers

Both petrol and electric powered lawn mowers can be suitable for slopes, so long as they are self propelled. If you’ve got a very steep slope (above 15 degrees), you’re better off going for a hover mower.

If you do opt for an electric lawn mower, mains powered machines are better. This is because the power delivered is usually higher and more consistent. Running out of battery part-way up a hill can be dangerous and very hard work! 

While petrol lawn mowers are undoubtedly heavier than electric models, their higher power generally means that they are a better choice for slopes. 

READ NEXT: The UK’s Best Petrol Lawnmowers

Be Aware of the Lawn Mower Weight

One of the most important things to think about when it comes to purchasing a mower for sloped gardens is the weight. 

While heavier lawn mowers are almost always self propelled, the weight is still worth considering. You’ll want to be able to support the mower going up and down the hills.

Many gardeners opt for a lightweight lawn mower purely because they are easier to manage. Lugging a heavy mower from shed to lawn can be tiresome, and that’s before you’ve even started mowing uphill! If you’re worried about managing your lawn mower, you’re better off opting for a lightweight model. 

Petrol lawn mowers can weigh anywhere from 20 kg to 45 kg! Electric models tend to be a lot lighter.

Why a Wider Cutting Width Will Help

For steep slopes, a wider cutting width can help. This is because you’ll need to mow in a lateral direction, across the slope as opposed to up and down it. Pushing the mower straight up and down the hill can be dangerous if you lose your footing. 

Mowing across the hill laterally is a lot easier with a wider cutting width. The mower has more to it, meaning it’s more likely to stay balanced, and you’ll be able to mow the hill in fewer passes. If your hill is steep enough that you’ll need to mow sideways, you’re better off going for a wider cutting width for more stability.

FAQs

What’s the safest way to mow a steep hill?

Mowing a steep hill can be dangerous, so it’s important that you are adequately prepared. Make sure all your equipment is in good condition and that all the safety features are working properly. If you are using a petrol mower, ensure it’s regularly serviced.

To mow uphill, you should first raise the cutting deck to its highest point. This will make it easier to push the mower over any bumps you encounter. It’ll also give your mower better grip next time around. 

When mowing uphill, ensure the ground is completely dry and that you are wearing grippy footwear. Slipping downhill when you’re in control of a 20 kg mower can be very dangerous. 

The best way to mow is to move laterally along the hill. Don’t go straight up and down, but push your mower from one side of the hill to the other. 

What is the maximum slope for a lawn mower?

Most push mowers should be able to tackle a slope of around 15 degrees, while those with more power should be able to handle 20 degrees or more. Ride-on mowers shouldn’t be used on any slopes above 15 degrees unless they have been specifically designed for steeper slopes. Remember to take into account the terrain and ground conditions too. Don’t mow uphill in wet conditions. 

Lightweight mowers are best for steep slopes, because they are easier to handle on an angle. However, you should also ensure the mower has enough power and, ideally, is self propelled to make going up the hill easiest. 

Mowing a slope that’s too steep can really damage your mower, and it can also be very dangerous. 

What if my bank is too steep to cut the grass with a lawn mower?

If your bank is too steep to cut the grass with a lawn mower, you’ll need to use a petrol strimmer instead. These are easy to manage and allow you to work at your own pace. 

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