It’s been yonks since we drove the current M340i xDrive – but no revisit is required to know the extent of its peachiness. Here, after all, is a car that combines BMW’s lusty 3.0-litre straight-six with its flagrantly rear-biased…

It’s been yonks since we drove the current M340i xDrive – but no revisit is required to know the extent of its peachiness. Here, after all, is a car that combines BMW’s lusty 3.0-litre straight-six with its flagrantly rear-biased…