The performance figures are more impressive 445 HP, 480 Torque !!!!
0-60 : 4.6 on 650GC
0-60 : 4.5 on 650GC XDrive
I want to test drive and get one if I like it. The starting price prediction for the 650GC is 73,600
http://www.netcarshow.com/bmw/2013-6-series_gran_coupe/