If you’re not a fan of diesel power, you can opt for the six-cylinder petrol xDrive40i. Its engine is serenely quiet when you want it to be, and nice and snarly when you’re pressing on. What’s more, it’s impressively responsive, even at the very bottom of the rev range, and once you hit 2000rpm and the turbocharger really kicks in, there’s no stopping this 335bhp unit. It is, though, a little slower than the Audi Q7 55 TFSI, but not by much.