Munich reveals fast ‘M’ version of its X4 SUV with around 350bhp and a claimed 5.0sec 0-62mph time
19 June 2015

BMW is preparing to launch a new M-Performance model in the form of a hot X4 M40i.

The M40i is planned to make its public debut at the Detroit motor show next January prior to the start of UK sales during the first quarter of 2016. It will sit at the top of the BMW X4 line-up at a price pitched above the existing £49,295 X4 xdrive35d M Sport, according to highly placed BMW sources.

Details about the X4 M40i remain scarce although Autocar understands it will receive a powered-up version of BMW’s superseded N55 engine that goes under the internal codename S55.

The turbocharged 3.0-litre six-cylinder petrol motor - which was first developed for the 1 Series M Coupe and is also earmarked for the upcoming BMW M2 - is rumoured to have a revised induction system to achieve an output around 350bhp.

This would provide the 4WD X4 M40i with 41bhp more than the X4 xDrive35d M Sport and 48bhp more than X4 xDrive35i – the latter not sold through official BMW channels in the UK.

The new engine is expected to be mated to a reworked version of the standard X4’s eight-speed ZF-produced automatic gearbox, with steering wheel-mounted Steptronic shift paddles and BMW’s xDrive 4WD system with electronic torque vectoring.

With a kerb weight in the region of 1820kg, BMW’s new M-Performance model is likely to get to 0-62mph in 5.0sec, with a top speed limited to 155mph.

By comparison, the turbocharged 3.0-litre six-cylinder diesel powered X4 xDrive35d M Sport hits 62mph in 5.2sec, with a top speed of 154mph.

Other tweaks include a heavily revised steel spring suspension, an M Sport exterior styling package and an upgraded interior with exclusive M Sport instruments, multi-function steering wheel, and various trims.

The performance version of the X4 - which will compete against the Porsche Macan Turbo and Audi RS Q3 and Mercedes GLC  - was first seen testing last autumn, as our spy photographs show. 

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Our Verdict

We suspect the reason for the BMW X4's creation is because of the Porsche Macan

The X6 is a showroom hit. Does its smaller brother deserve to be?

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7 August 2014
Few cars were criticised over their looks more than BMW X6. It has already spawned X4. Now just wait for Audi, Porsche and Mercedes versions.

19 June 2015
Probably much better car than given credit for, mainly due to the dislike of the whole concept by motoring mags/some online commenters, but why would you bother with this when the standard X3 is every bit as good to drive, roomier, cheaper and looks better?

19 June 2015
There's a couple of these around here now, they look terrible.

19 June 2015
I presume a M340i/M440i will be on the cards too? If that was the case, the advantage over the M135i/M235i wouldn't be great performance wise.

19 June 2015
I guess the Porsche,Mercedes,BMW battle rages on?,but,aren't there enough choices?

Peter Cavellini.

19 June 2015
What happened to the days of the 3,5,6,7 and 8 series.... Stick to the basics instead of producing ugly crap... I'm off to buy a Merc.

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