The new M550i has arrived along with a wider 5-series range update ... borrowing the latest 523bhp version of the N63 V8 twin-turbo engine from the M850i in place of the previous 456bhp unit.

Upon its release in late-1984, the BMW M5 E28 series ... to 2023, offers the same all-wheel drive system and a similar engine, minus the hybrid system. Instead, its 4.4-liter twin-turbo V8 is ...