2018 BMW X3 vs 2020

What's the difference?

BMW's 'B58' six-cylinder engine is what's known in the trade as 'a cracker'. Three litres and a turbo's worth of silky smooth power, it delivers big dollops of torque with the kind of immediacy once reserved for much larger units.

It's already a perfect match for the M140i hatch, as well as the M240i coupe and convertible. And once you hit on a winning formula, why not spread the joy into the ever-growing world of SUVs?

Enter the X3 M40i, the first performance variant in BMW's compact SUV range, sitting just under $100k (before on-road costs) and aiming up at a quality field of similarly sized and specified performance versions like the Audi Q3, Jaguar F-Pace, Merc-AMG GLC, Porsche Macan, and Volvo XC60.

Big fast SUVs have long been a guilty pleasure of mine. My brain has been telling me for years, since the first time I drove one - the first-gen Audi SQ5 - that they're silly and wasteful and 'not my kind of car'.

The Europeans - and latterly, the Americans - seem to be playing to an audience of me, convincing my prejudiced head that my try-anything heart is right: over-engined, jacked-up, stiffly-sprung family wagons are as much fun as anything else.

The X3 M is BMW's first full-fat M version of the X3, a car that has never really fired the imagination until this third generation. First we got the very good X3 M40i, now we have a 375kW, twin-turbo straight-six screamer, the M Competition.