Skip advert
Advertisement
Road tests

BMW X4 M40i 2016 review

Range-topping X4 SUV gets M division makeover and enough grunt to worry a Macan GTS, but it won't come to the UK

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

The M40i is a great addition to the X4 range and is almost as fun to drive as the Porsche Macan GTS. However, UK buyers won’t ever find this out as BMW doesn’t plan on selling it here anytime soon. It’s a real shame as it would give the rest of the X4 range a sporting pedigree its styling suggests. The UK range will continue to be topped by the 3.0-litre diesel X4 M Sport 35d which is far cheaper to run and makes more sense.

Advertisement - Article continues below

With SUV's creeping higher up the sales charts every month, the battle is on for manufacturers to explore every possible sub-niche - and one of the more steadily growing markets is for cars which emphasise the 'Sport' in Sport Utility Vehicle.

Arguably, the top of the tree is Porsche with the Cayenne - one of the first of these cars to put the focus solely on-road, but its Macan is a small SUV that's arguably even more focused on driving thrills. Now, however other manufacturers are creeping in, and going one further, adding coupe looks to the SUV body. 

One of these is BMW with its X4. Poised to steal some of the Macan's thunder, the German company has recently added a performance model to the range in the form of the X4 M40i. It’s not a full-blown M car (otherwise it would wear the X4 M badge just like the larger X5 M) but it’s an official makeover by BMW’s highly talented M division. Think of it as an X4 M 'lite' and you wouldn’t be too far from the truth.

So under the bonnet lies one of BMW’s much-praised 3.0-litre turbocharged straight-six engines with a handful of oily bits changed by BMW M. These M tweaks include items such as a modified inlet manifold and additional boost pressure for the turbo. As a result, the engine develops a GTS-matching 355bhp and can hurtle to from zero to 62mph in just under five seconds then on to a limited 155mph.

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

Used - available now

EcoSport

2022 Ford

EcoSport

17,232 milesManualPetrol1.0L

Cash £11,599
View EcoSport
E-Class Coupe

2023 Mercedes

E-Class Coupe

23,490 milesAutomaticDiesel2.0L

Cash £34,549
View E-Class Coupe
3 Series

2022 BMW

3 Series

45,144 milesAutomaticPetrol2.0L

Cash £19,949
View 3 Series
3 Series

2026 BMW

3 Series

66,545 milesAutomaticPetrol2.0L

Cash £20,600
View 3 Series

Best SUVs and 4x4s

Putting those figures into context reveals the M40 is a seriously quick car. It’s quicker to 62mph than the current range-topping X4 M Sport 35d diesel by 0.3 seconds, and more amazingly the Macan GTS lags behind the X4 M40i by the same 0.3 seconds, (although the Porsche isn’t limited to 155mph and can top 159mph). Moreover, the M40i is only 0.5 of a second slower than the new M2 Coupe.

To separate the M40i from the M Sport 35d it gets 20-inch M alloy wheels, silver-coloured door mirrors and black exhaust pipes, while the interior gets sports seats and various M-branded goodies. There’s also a sports exhaust system to give a fruity engine note.

Best sports cars

On the road it’s clear this isn’t just a 35d with some fancy M badges. The stiffer suspension does a great job of keeping the high-riding body rigid through twisty sections of road. BMW says the 40i’s four-wheel drive system is rear biased but to be perfectly frank it’s difficult to feel the back axle having more power than the front – the car stays incredibly grippy and planted. The steering is crisp (even if the wheel is overly large in diameter), the eight-speed M-Steptronic auto box is quick at swapping ratios, and the 3.0-litre straight-six turbo is a rev happy delight.

It’s a very impressive car, but sadly this will be our only ever drive of it. BMW says due to petrol-powered SUVs not being tremendously popular in the UK, it won’t be offered here. It’s a real shame but it’s easy to see their point – the 35d returns over 10mpg more and is four road tax bands lower. It would seem the Porsche Macan GTS may be ruling the roost for a little longer.

Skip advert
Advertisement

New & used car deals

Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £4,511 off RRP*
Omoda 5

Omoda 5

RRP £23,990Avg. savings £1,481 off RRP*
Hyundai Tucson

Hyundai Tucson

RRP £29,820Avg. savings £6,189 off RRP*Used from £12,295
Nissan Qashqai

Nissan Qashqai

RRP £27,415Avg. savings £6,037 off RRP*Used from £10,399
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Some Chinese car brands are doomed to disappear, warns Skoda boss
Skoda Kodiaq - front cornering

Some Chinese car brands are doomed to disappear, warns Skoda boss

Skoda’s sales and marketing boss warns “there will be a consolidation” of the number of Chinese car brands around
News
3 Feb 2026
New Kia EV1 electric city car on the way to rival the Renault Twingo
Kia EV1 - front (watermarked)

New Kia EV1 electric city car on the way to rival the Renault Twingo

Kia's design boss lifts the lid on plans for a Renault Twingo and Volkswagen ID. Lupo rival, and our exclusive images preview how the EV1 could look
News
2 Feb 2026
Meet Renault’s new SUV: a Dacia Duster but not as we know it…
Renault Duster - front

Meet Renault’s new SUV: a Dacia Duster but not as we know it…

Posher inside and out and with more headroom, welcome to the upside down world of the Indian Duster
News
26 Jan 2026