The upper 650i coupe turbocharged 4.4-liter V8 with a higher power and torque counts of 445 hp and 480 lb.-ft respectively. The upper trim is boosted with updated 20-way power adjustable seats, larger 19-inch wheels, upgraded leather upholstery and a 16-speaker Harman Kardon premium sound system and BMW concierge services. we recommend users to stick to the 640i trim if they want a premium coupe experience but if you are looking for a thrilling sporty premium coupe, 650i is the car for you.