BMW X3 M40i 2018 UK review

Our Verdict

The stakes have never been higher for BMW’s mid-sized SUV, now the X3 in its third generation. So can it deliver?

  • First Drive BMW X3 M40i 2018 UK review
    BMW brings a more restrained take on the performance SUV to rival the Porsche Macan S and Mercedes-AMG GLC 43
  • First Drive BMW X3 xDrive20d 2017 review
    Output of lesser oil-burner is unchanged but third-gen BMW X3 is bigger, plusher and better-equipped
Simon Davis
6 June 2018
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What is it?

In a world where it seems like performance SUVs are becoming increasingly flashier, ostentatious and — in some cases — downright vulgar, the new BMW X3 M40i arrives as a refreshingly restrained, flies-under-the-radar take on what a fast 4x4 can be.

You won’t find any massively flared wheel arches, ridiculous spoilers or unnecessarily large air intakes here. In fact, if it weren’t for two fairly large exhaust outlets and some rather prominent M40i badging on the tailgate, you could almost mistake it for any other X3.

That all seems to be an integral part of the appeal of BMW’s M Performance line-up, though.

These are cars that get a healthy serving of M performance, but don’t shout about it quite so much. And in the X3 M40i, that performance comes courtesy of a 3.0-litre, twin-turbocharged inline six engine.

It’s from BMW’s B58 family of motors — variations of which appear in cars such as the M240i and 440i — and, in this application, develops a healthy 355bhp at 5500rpm and 369lb ft from 1520rpm, sent to all four wheels via an eight-speed automatic transmission. From a standstill, BMW claims the X3 M40i will hit 62mph in 4.8sec and carry on to an electronically limited top speed of 155mph.