Because the X3 M40i isn’t from the actual M division, it doesn’t get a proper M engine. Instead, the M40i is fitted with BMW’s latest 3-litre straight-six, the B58. It’s the same engine ...

We’ve already driven the performance variant of the new BMW X3, the M40i, but this is our first ... s 2-litre turbocharged four-cylinder diesel engine, while the X3 30d packs a 3-litre inline ...