Skip advert
Advertisement
Road tests

New BMW X4 M Sport 2018 review

Is the new BMW X4 coupe-SUV a better bet than the X3 it’s based on? We drive it in M Sport guise to find out...

Find your BMW X4
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

In isolation, the all-new BMW X4 is a very good car. It offers what is arguably the best compromise between ride and handling of any mid-size SUV on sale – and it’s got one of the finest interiors and infotainment systems in the business. The trouble is, those things also apply to the existing X3; a car that is more spacious, less contrived to look at and much better value for money. Unless you really want to be different, it’s tricky to recommend this new X4 over BMW’s already brilliant X3 SUV.

Advertisement - Article continues below

The new BMW X4 is an odd-looking thing. It’s not the first model to fuse coupé and SUV shapes – even the first-generation car was preceded by the bigger X6 – but for some, it’s a niche that’s tough to come to terms with.

The combination of a bluff front end and huge grilles with a sleek, receding roofline gives the impression its face is too big for its body. Styling is a subjective thing, of course, but could this new car ever be described as pretty?

• BMW X3 M40i 2018 review

To many, that won’t be a problem. The X4’s appeal will come from the fact that the ‘sport’ part of Sports Utility Vehicle (SUV) is more influential than it is for the car on which it’s based: the X3. Thanks to firmer suspension and a wider rear track, BMW reckons the X4 will out-handle the class-leading Porsche Macan.

There are two engines to choose from at launch in the UK. Both are diesels and get BMW’s xDrive all-wheel-drive system. The entry-level xDrive20d has a 187bhp 2.0-litre four-cylinder engine, while the M40d uses a 3.0-litre straight-six that produces 355bhp and 500Nm of torque.  Both 30d and M40i models (already available in the X3) will arrive later; until then, officially the X3 is the faster car.

Advertisement - Article continues below
Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

Golf GTE

2017 Volkswagen

Golf GTE

79,000 milesAutomaticPetrol1.4L

Cash £9,735
View Golf GTE
Auris

2014 Toyota

Auris

26,317 milesManualPetrol1.3L

Cash £8,371
View Auris
A1 Sportback

2026 Audi

A1 Sportback

22,736 milesAutomaticPetrol1.0L

Cash £16,402
View A1 Sportback
Superb

2017 Skoda

Superb

90,736 milesManualDiesel2.0L

Cash £7,995
View Superb

The four-cylinder version comes in three trim levels. Sport models get 18-inch alloy wheels, LED headlights and leather upholstery, while M Sport cars add 19-inch wheels, a bodykit and front sports seats. Range-topping M Sport X variants get a panoramic roof and extra bits of fake 4x4 trim.

The M40d is a standalone model. It has 20-inch forged wheels, uprated brakes and fully digital instruments. Regardless of spec, the cabin is a lovely place to be. The dash design is lifted from the excellently appointed X3. It’s beautifully put together, easy to figure out, and, when equipped with the larger 10.25-inch touchscreen (M Sport trim and above), has arguably the best infotainment system in the business. It’s so good that the lack of Android Auto is only a mild inconvenience.

The sloping roofline does compromise interior space. Six-footers sat in the back will be brushing their heads against the rooflining, although legroom is still plentiful even for the tallest adults. The 520-litre boot is smaller than the X3’s and the opening is tighter and higher.

But all is forgiven out on the road. The suspension changes take the X3’s already strong starting point and add an extra dimension of body control. Only when you hit a severe mid-corner bump while really pressing on does it seem anything other than completely unflappable. It’s remarkable for a high-riding SUV.

Advertisement - Article continues below
Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Adaptive dampers are a £460 option, and they’re worth ordering for the extra smoothness they bring in Comfort mode. That said, the ride quality never comes close to feeling harsh.

It’s the 2.0-litre diesel unit that will undoubtedly prove the biggest seller. In the X3 it performs strongly when matched to a brilliant eight-speed automatic transmission.

The engine itself isn’t as refined as the equivalent Audi diesel, but there’s not much in it. At a cruise, the most audible sound is from the big wheels and low-profile tyres, with a little wind whistle making its presence felt around the door mirrors, too.

It all helps to put the X4 in very good stead against its rivals. Prices start from £42,900 for the xDrive20d, which is a little less than the Mercedes GLC 250 d Coupé. Although M Sport and M Sport X models are more expensive than the Mercedes, the BMW is faster and much better to drive, without feeling significantly stiffer. Alfa Romeo’s Stelvio runs it close in terms of fun, although it can’t compete for interior quality.

The main concern for the X4 comes from within BMW’s own stable. The xDrive20d M Sport is £2,980 more expensive than the equivalent X3, which is a lot of money for a car that isn’t as practical and, crucially, is predicted to hold around five per cent less of its list price over three years.

Skip advert
Advertisement
Chief reviewer

Alex joined Auto Express as staff writer in early 2018, helping out with news, drives, features, and the occasional sports report. His current role of Chief reviewer sees him head up our road test team, which gives readers the full lowdown on our comparison tests.

New & used car deals

Volkswagen Golf

Volkswagen Golf

RRP £12,795Avg. savings £3,429 off RRP*Used from £10,895
Volkswagen Tiguan

Volkswagen Tiguan

RRP £27,995Avg. savings £4,092 off RRP*Used from £22,780
Kia Sportage

Kia Sportage

RRP £12,380Avg. savings £3,506 off RRP*Used from £11,650
Renault Clio

Renault Clio

RRP £10,099Avg. savings £3,744 off RRP*Used from £7,500
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Used Car of the Year 2026 is the Hyundai Ioniq 5
Used Car of the Year 2026 - Hyundai Ioniq 5

Used Car of the Year 2026 is the Hyundai Ioniq 5

While you can’t go wrong with any of our Used Car Awards winners for 2026, the Hyundai rose above the rest
News
21 Oct 2026
New Chery Tiggo X7 revealed: who knew a Tiggo could get so tough?
Chery Tiggo X7 - front 3/4

New Chery Tiggo X7 revealed: who knew a Tiggo could get so tough?

Chery's new Tiggo X7 SUV promises greater off-road ability than the standard Tiggo 7, but UK launch plans remain unclear
News
21 Oct 2026
Tories spark rumours of 'heavy car tax' in Labour budget - here’s what it could cost
Land Rover Defender V8 - front cornering

Tories spark rumours of 'heavy car tax' in Labour budget - here’s what it could cost

The Conservative Party is claiming that Chancellor John Healey may bring a weight-based car tax supplement in with the next budget
News
23 Oct 2026