RANGE REVIEW: 2020 BMW 3 Series – which model should you buy?

The BMW 3 Series family currently comprises four engine and spec-level choices, kicking off with the 320i (there’s no 318i for now). Next step is the volume-selling 330i, then there’s the left-field 330e plug-in hybrid (PHEV), and finally the M340i xDrive flagship in lieu of the yet-to-be-released new M3 coming soon enough. We have five models of the BMW 3 Series family, and Mike Costello asks the question - which is the one you should buy?