2013 BMW Gran Coupe 650i to receive revised N63 twin turbo V8 with 450 horsepower, 50 more than standard N63/650i
The BMW 6 series Gran Coupe 650i
will have 450 horsepower and 479 pound-feet of torque. This is 50 more horses than the standard 650i coupe. The N63 V8 was revised for duty in the heavier Gran Coupe but we do not know what changes were made. It will be interesting to see if it is software only or if there are hardware changes which no doubt many 650i, 550i, X5 xDrive50i, and X6 xDrive50i owners will be interested in retrofitting.