Best 5 Lawnmowers for Hills Under £350

Find the top 5 lawnmowers for hills under £350, all tested on gardens with slopes in mind. Affordable, reliable, and from brands that actually offer warranties you can read without crying. No overpriced electric self-propelled models here, just honest picks that handle slopes without flattening your bank account.

Best 5 Lawnmowers for Hills & Slopes Under £350

Affordable power that doesn't wheeze halfway up a slope. If your garden is blessed-or cursed, depending on your knees-with hills, gradients, or those sly steep patches that make you question every life choice that led to owning property, you need a mower that can keep up, not one that taps out halfway, leaving you with stripes that look like modern art.

Everything in this list was under £350 at the time of review, because nobody wants to remortgage the shed just to keep the grass tidy.

Why We Avoided Electric Self Propelled (for now)

They sound great in theory, yes: press a lever, off you glide. In real life, though, many budget electric self-propelled mowers are like toddlers on sugar: fast to start, quick to burn out. We found that too many were prone to battery depletion when tackling slopes and the really reliable ones had price tags that stretched well beyond £350. So for this round-up we're sticking to more dependable, affordable petrol options that won't leave you stranded on a hill with 12 percent battery and 88 percent regret.

What You Will Find in This Guide

Affordable Solutions Under £350 - Each of our picks in this list gives you strong performance, without the strong financial pang. Perfect for UK households who want good engineering, not gimmicks.

Established brands with real warranty support: No mystery imports, no mowers with instructions written by someone who has never seen grass. Only brands with solid UK presence, spares, and customer service that actually answers emails.

Built for Slopes, Hills and Mildly Terrifying Gradients: Each mower on this list can take inclines in its stride, without stalling, sliding or giving up on life. Some are remarkably capable climbers, even without self-propulsion.

Top Lawn Mowers for Hills & Slopes

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#1, Mountfield SP41 Self-Propelled Petrol Lawnmower

With a similar intention in mind-if you want a hill-friendly mower that does not cost more than your monthly food shop, the Mountfield SP41 is the cheerful little workhorse you want trotting beside you. Coming in at around £200, it is one of the best value self-propelled petrol mowers you can get from an established brand that actually provides a warranty longer than the toaster.

With a 39 cm cutting width and 123cc ST120 Autochoke engine, this machine is made for the small to medium garden, including the type with gentle slopes or those annoying rolling sections that make pushing a mower feel like leg day at the gym. Thankfully, it's self-propelled, so you get a welcome nudge forward, even if you start regretting yesterday's takeaway halfway up the hill.

The polypropylene chassis keeps the weight to about 21 kg, which means it is far easier to handle than some of the chunkier steel deck models. Grooved wheels give decent traction on uneven surfaces and five height settings let you switch from "neat and sensible" to "I swear it looked longer yesterday" in seconds.

The 40L collector is surprisingly roomy for a mower this compact, and the fold down handles help it squeeze into sheds already overflowing with abandoned DIY projects. Mountfield also backs it with a 2 year manufacturer’s warranty, which is reassuring when you are buying at the lower end of the price range.

Generally, it is light, reliable, and excellent value-a brilliant budget-friendly slope tamer.

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#2, Hyundai 17" 42cm 139cc Electric-Start Self-Propelled Petrol Lawnmower

If you want a mower that makes hills feel like a casual stroll rather than a full cardio session, Hyundai's self-propelled electric start model is the upgrade your garden deserves. Coming in at £300-£350, it's still under budget, but it feels more premium in almost every respect-most especially if your garden has big slopes, uneven sections, or a suspiciously hilly back corner the estate agent swore was "slightly elevated."

The headline feature is the electric start, meaning no more awkward pulling of the cord while praying the neighbours are not watching. Hyundai's CDI ignition makes starting almost instant, and there is recoil backup should you enjoy the old-fashioned way. The 139cc engine offers enough torque to handle tougher terrain while the rear wheel drive gives confident grip on slopes where cheaper mowers tend to slip like they are wearing socks on a polished floor.

The 42 cm cutting width, 6 height levels and durable powder coated steel deck put it firmly in the serious mower category. Yes, it is heavier at 31 kg, but the self-propulsion does the heavy lifting while you simply steer like a proud captain of a very grassy ship.

It also boasts of minimal assembly, a spacious grass bag, and a 3-year Hyundai warranty, beating most competitors at this price point. If the Mountfield is the friendly assistant, this Hyundai is the strong, dependable hill climber with gadgets, muscle, and long-term reliability.

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#3, Einhell Petrol 46cm Self-Propelled Lawn Mower

If you want something with a bit more muscle for bigger gardens and chunkier hills, the Einhell 46 cm self-propelled mower steps in like a gym enthusiast who actually knows what they are doing. Priced between £250 and £300, it is firmly in the mid-range category, but what you get for the money is genuinely impressive, especially if your lawn is closer to a field than a patch.

Powered by a 2.0 kW 4-stroke engine, this Einhell has enough torque to plough through long grass, wet patches, and those uphill areas that usually send cheaper mowers into early retirement. This disengageable rear wheel drive is clever, allowing you to switch between manual manoeuvring and powered pushing, depending on the terrain. And if your garden mixes slopes with obstacles, you will appreciate that flexibility more than you might think.

The star feature is the nine height settings, a range from 25 mm to 80 mm, controlled by one central lever. Whether one wants a neat summer trim or has returned from holiday to discover one's lawn is now a nature reserve, this does all duties without fuss.

The 65L grass bag is one of the largest in this price range and saves you from constantly having to empty it. With a claimed working area of up to 1400 m², this is targeted at large gardens, sloped gardens, and those that treat mowing like a marathon.

Throw in Einhell's 2-year warranty, plus an extra year on registration, and you have a powerful, capable, hill-capable machine that reaches above its class.

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#4, Cobra M46SPCVX 18" Self-Propelled Petrol Lawnmower

If there's one mower on this list that makes hills feel less like punishment and more like a slightly energetic stroll, it's the Cobra M46SPCVX, our own personal favourite. Sitting between £250 and £300, it offers an ideal mix of power, build quality, and easy handling, and simply put, it feels like a cut above most competitors in the same price bracket.

The 131cc DG500 OHV engine gives it solid, dependable grunt without the drama. Unlike some mowers that rev like a motorbike but cut like a butter knife, the Cobra delivers smooth, reliable performance even on uneven terrain. The self-propelled drive system reduces fatigue massively, especially when you start climbing slopes and suddenly remember gravity exists.

The 18-inch steel deck strikes a perfect balance between durability and manoeuvrability, while the edge trimming design lets you mow close to walls and flowerbeds for far less tidying up afterward. If you're tired of leaving a 5-cm strip of shame around the borders, this mower earns instant respect.

With seven cutting heights between 25 mm and 75 mm, it is versatile enough for both everyday cutting and tackling overgrowth. The 60L grass bag with Cobra’s Vortex airflow system compacts grass brilliantly, meaning fewer emptying stops and cleaner results.

Coming in at around 23 kg, lighter than many of the steel deck mowers of this size, helps when tackling slopes and tighter areas. Add a 2-year domestic warranty with UK-based support, and you have a mower that is reliable, capable, and genuinely enjoyable to use. This is the one we would pick for hills, hands down.

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#5, ParkerBrand 17” Self‑Drive Petrol Lawnmower

If you are strictly shopping under £200 but still want something that can climb hills without wheezing like an asthmatic accordion, the ParkerBrand 17-inch self-drive mower is the hidden gem of budget gardening. It's just one of those mowers that will have you double-checking the price, as it feels way more expensive than it is.

With the 150cc four-stroke engine giving it noticeably more oomph than many rivals in the bargain bracket, the self-drive system means you are not pushing this thing up slopes, you are merely supervising. That alone makes it worth considering for uneven gardens or awkward gradients.

Despite the price, you still get a full steel deck, adding durability and a reassuringly solid feel. The 17-inch cutting width is ideal for small to medium-sized gardens and makes it surprisingly nimble around obstacles, flowerbeds, and that suspicious patch where the dog definitely buried something.

The adjustable height range from 25 mm to 75 mm covers everything from weekly tidy ups to tackling grass that suddenly remembered it is spring. The 45-liter grass bag is a decent size for the footprint of the mower and reduces constant back and forth trips to the compost bin.

One clear bonus is the mulching port, which allows you to feed nutrients back into the lawn, saving you from buying lawn feed and making you look like a gardening expert even if you are winging it. Add the hose connector for quick under deck cleaning, and you have a budget mower that's both practical and unexpectedly well-equipped.

For the price, it really is quite impressive and easily one of the best value slope-friendly petrol mowers in the UK.

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Conclusion

Choosing a lawnmower for a hilly garden is a bit like picking a hiking partner-you want it to be reliable, stable, and not one that would ditch you halfway up the incline. Every mower listed below sits firmly under £350, while offering up their own unique blend of power, comfort, and value without toying with overpriced electric self-propelled models that suck their batteries dry faster than your motivation does on a Monday morning.

Bargain Hero

The Mountfield SP41 is the lightweight bargain hero for smaller sloped gardens, the Hyundai brings premium power and features while still staying within budget, and the Einhell is the no-nonsense bruiser made for bigger, tougher plots. Our personal favourite, the Cobra, strikes the best overall balance of performance and handling on hills; the ParkerBrand brings pure value for money, proving you do not need to spend big to get a capable slope-conquering machine.

Final Word

Whether you are mowing a gentle rise or tackling a garden that feels suspiciously like the Lake District, this list gives you reliable, hill-friendly options that will not empty your wallet. Pick the one that matches your garden size, your fitness ambitions, and your tolerance for uphill battles. With the right mower, even the steepest garden becomes a manageable weekend job rather than a sweaty negotiation with gravity.