The 2020 BMW M8 Gran Coupe is the range-topping version of the 8 Series Gran Coupe. As the latter replaces the 6 Series Gran Coupe, the 2020 M8 Gran Coupe steps in to replace the M6 Gran Coupe. Essentially an M8 Coupe with extra rear doors, the 2020 M8 Gran Coupe shares almost everything with its two-door counterpart. So just like the two-door, it's available in two flavors output-wise, both powered by the mighty 4.4-liter V-8 engine. The 2020 M8 Gran Coupe arrives just in time to compete with the recently launched Mercedes-AMG GT 4-Door Coupe and the new, second-generation Audi RS7. Let's find out more about BMW's range-topping high-performance four-door in the review below.