Best Treadmill Under £400: 3 Top Picks for Home (2026)

If you're after the best treadmill under £400, the good news is that a budget like this stretches further than you'd think, though the options are surprisingly thin below this price point. We compared the manual and motorised models currently worth buying for home use and found three foldable treadmills that genuinely punch above their price: the XTERRA Fitness TR150, the Sunny Health & Fitness SF-T1407M, and the LONTEK auto incline treadmill.

Working from home punched a hole in our metabolism, and our old shirts suddenly stopped fitting. If you can relate, you're in the right place. All three machines below have a usable running deck, a proper speed range and an incline, and every one folds away so it won't take over your spare room.

1. XTERRA Fitness TR150 Folding Treadmill: Best Overall

The XTERRA Fitness TR150 is the most established name on this list, and it's the one we'd point most people towards. It's a proper folding home treadmill from a brand that has been making them for years, rather than a rebadged import.

It's built around a 2.25HP motor with a 0 to 10kph (0 to 6mph) range and Quick Touch Speed controls, so you can jump straight to a pace instead of holding a button. The running area is 41cm x 127cm (16" x 50"), which clears the 42-inch mark we'd suggest as a minimum, and XTERRA's XTRA Soft Deck cushioning sits underneath to take the impact off your joints. Incline is manual across three levels.

The console is where it pulls ahead. A 5" LCD gives you 13 programmes (12 preset plus a manual mode), the widest choice of our picks, and reports time, distance, calories, programme, pulse and speed. Pulse grip sensors are built into the handles, and there's an accessory tray and a smart device holder for a phone or tablet.

An easy-pull knob folds it down to 72 x 74 x 155cm and transport wheels move it out of the way. It supports users up to 113kg (249lbs) and weighs 44kg (97lbs) itself, so it's a substantial machine rather than something you'll carry upstairs on a whim.

The warranty is the clincher at this price: lifetime cover on the frame, one year on the motor, then 90 days on the deck, parts and labour.

This is the best-rounded treadmill on our list for daily home use. A long cushioned deck, the widest programme choice here and a lifetime frame warranty make it our top pick, and it folds away neatly when you're done. Just go in knowing it spends your whole budget, and check the price and stock before you commit.

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2. Sunny Health & Fitness SF-T1407M Manual Treadmill: Best Manual

The Sunny Health & Fitness SF-T1407M is ideal for medium-impact workouts and easily the cheapest way onto our list. It's a manual treadmill with a decent weight capacity and a multi-function LED display that tracks speed, time, distance and calories burned.

For a compact machine, it has a genuinely good shock-absorption system and a manual incline fixed at 13.5%, a healthy elevation for a folding manual treadmill. It folds flat, runs smoothly and uses better-than-expected deck material, all for a fraction of a £400 budget. Built-in transport wheels and a soft-drop system mean folding and unfolding takes almost no effort, and the 42-inch running surface gives you plenty of room.

The control panel covers the basics well. There are no powered speed controls (it's manual, after all), but you can still see the pace you're working at, which is rare on inexpensive manual treadmills. The main thing we'd add is pulse sensors and a tablet holder. Take notes, Sunny Health!

It misses out on pulse sensors and an adjustable incline, but the floor stabilisers and non-slip deck stand out at the price. If you want the lowest-cost route to a reliable home treadmill, this is the one.

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3. LONTEK Auto Incline Treadmill: Best for Features

Not into weightlifting and high-impact training? Neither are we, which is why a treadmill is the piece of kit we keep coming back to, and why the LONTEK auto incline treadmill makes the list. It undercuts our top pick by well over £100 while beating it on raw specification, which is the trade-off worth understanding here.

The headline feature is the powered incline. You adjust anywhere from 2% to 20% at the touch of a button, and the buttons sit on the side handrails so you can change gradient without breaking stride. Our top pick makes you stop and reposition pads by hand, so if hill intervals appeal, this is the machine that supports them.

It's the stronger machine on paper elsewhere too: a 3.5HP motor driving 1 to 14km/h, a 180kg weight capacity (against the TR150's 113kg) and a 107 x 40cm belt over composite pedals with built-in shock absorbers and shock pads. A large touch screen cycles through speed, time, distance, incline, calories and heart rate every five seconds, and you can change mode directly on the screen. The console height adjusts across three positions and the display tilt adjusts too.

It arrives 90% pre-assembled with built-in transport wheels, and LONTEK runs a 24/7 after-sales line. Two things temper it against the XTERRA: folding it fully means removing a few screws rather than pulling a knob, and LONTEK publishes no preset programme count or warranty term, where XTERRA states 13 programmes and a lifetime frame warranty. That's the honest trade: more machine, less certainty behind it.

If you want the most treadmill for the money and a powered incline matters to you, this is the pick. If you'd rather have a longer deck, a stated programme list and a lifetime frame warranty behind you, take the XTERRA.

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Features to look for before you buy a treadmill

Buying a treadmill takes a bit of homework. You're bringing a large machine into your home and relying on it to help you get fitter, so it pays to get one that's durable, comfortable and fast enough for your goals. A £400 budget is more than enough, so here's what to prioritise.

Space, size and weight

If you have a dedicated workout area, a larger treadmill is fine. But a space-saving, foldable model leaves room for other equipment down the line. All three of our picks fold, though they do it differently: the XTERRA uses an easy-pull knob, the Sunny has a soft-drop system, and the LONTEK needs a few screws removed to go fully flat.

A treadmill's own weight matters too, because it tends to track the weight it can support. The 44kg XTERRA carries a 113kg user, and the heavier-framed LONTEK carries 180kg. A machine that feels light in the box will usually cap out lower.

Belt length and cushioning

Average-height users can largely ignore belt length, but taller users should choose a deck that runs longer than their stride so they can walk, build pace and eventually run comfortably. A good rule of thumb is a running surface of at least 42 inches, which is why the XTERRA TR150 and its 50-inch deck lead our list, and why the 107cm LONTEK belt is the one thing to check if you're tall.

Cushioning is the belt's surface material, and it matters most if you'll exercise on most days of the week. A well-cushioned deck makes power walking far more comfortable.

Speed and stability

Good treadmills adjust in roughly 2 km/h increments and top out around 10-12 km/h, depending on the motor. Bear in mind you may want to push the intensity over time, so an underpowered machine can hold you back. It's worth noting our top pick stops at 10kph while the LONTEK reaches 14km/h.

Look for floor stabilisers to keep the machine balanced on carpet or bare floor. A wobbly treadmill is a hazard, so an emergency lanyard is a smart safety feature to have.

Warranty and budget

For motorised and hybrid treadmills especially, aim for at least a two-year warranty. These are more complex machines and aren't immune to faults. This is where the XTERRA earns its price: lifetime frame cover and a year on the motor, against no published term at all from LONTEK. A £300 to £500 budget typically buys a dozen preset programmes, custom workout plans and progress tracking.

Types of treadmill

There are three main types of treadmill, and each has its place for burning calories and getting in shape.

Manual treadmill

Usually the cheapest option, a manual treadmill needs no electricity. Rollers under the belt move as you walk or run. The big upside is a lower injury risk, and these models fold up easily and are typically more compact by design.

Motorised treadmill

A motorised (electric) treadmill has a motor and electronic console, moving at set speeds you have to keep up with. The advantage is being able to lock in a target pace to hit your workout goal. They're larger and tend to take a permanent spot in the room, and most of the best-value treadmills, including both motorised picks above, fall into this category, complete with a control panel, screen and a heart-rate readout.

Hybrid treadmill

A hybrid treadmill doubles as an elliptical machine, so it's effectively two pieces of equipment in one. They're as large as electric treadmills but add features motorised models lack, such as cushioned seats for elliptical work and programmes for higher-impact exercise. They can switch between modes whenever you need.

Top budget treadmill brands

Treadmills are many things, but cheap usually isn't one of them. These three brands stood out for offering strong specs at a fair price.

Sunny Health & Fitness

Sunny Health & Fitness is based in LA and has spent over a decade in the exercise-equipment business. Its range spans treadmills, rowers, steppers, ellipticals and exercise bikes. We rate the pricing and quality, and the fact that every machine comes with assembly, usage and troubleshooting guides.

XTERRA Fitness

XTERRA Fitness is the most established brand on this list and the one that behaves most like a traditional fitness manufacturer, publishing full specifications and warranty terms rather than a wall of marketing claims. The TR150 above is its entry-level folding treadmill, and the range climbs well past this budget.

LONTEK by UMAY

LONTEK is known for affordable treadmills that consistently out-spec their price, particularly on motor power, weight capacity and incline. We'd recommend its machines to anyone who wants the most capable treadmill they can get for a moderate price, provided you're comfortable with less published warranty detail than an established brand offers.

FAQ

Are Sunny Health & Fitness treadmills worth it?

Yes. They offer a good speed range and several built-in programmes that work a little like a personal trainer, and the manual incline lets you set your own pace. For the money, they're a dependable choice.

What is the safety key on motorised treadmills?

Motorised treadmills include a safety lanyard that clips to the console at one end and to your clothing at the other. If you slip, the lanyard pulls free of the console and stops the belt immediately, helping you avoid injury.

Which budget treadmill has the most workout programmes?

The XTERRA Fitness TR150 has 13 programmes (12 preset plus a manual mode), making it the most programme-rich pick on our list. The LONTEK doesn't publish a programme count, but its powered 2% to 20% incline gives you another way to vary the intensity.

Final thoughts

The best treadmill under £400 should offer a useful speed range, a long enough running surface and an adjustable incline. As our picks prove, a budget machine can absolutely get you off the couch and back into shape. Our overall recommendation is the XTERRA Fitness TR150 for its long cushioned deck, programme choice and lifetime frame warranty, with the LONTEK close behind if you want a powered incline and a higher weight capacity for less money, and the Sunny Health & Fitness as the best low-cost manual option.

If £400 is more than you want to spend, our best treadmill under £200 and best budget treadmill UK guides cover the cheaper end. If you can stretch further, best treadmill under £500 adds longer decks and powered inclines as standard.

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• All treadmills
• Best Treadmill Under £200
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• Best Treadmill Under £500
• Best Incline Treadmill UK