The E34 M5 built between 1988 and 1995, however, is arguably truer to BMW's original spirit because of its inline-six engine. And whereas the original E28 M5 took the engine out of the M1 and ...

Extrapolate its level of superior firepower over the class-leading E34 M5 of 1990 to the equivalent F10 M5 of today and you’d have a saloon with 662bhp and no less than 791lb ft of torque.