The future BMW 4 Series Gran Coupe was recently spied again on the Nurburgring circuit in Germany. The prototype is still carrying a lot of camouflage, so we can't get a clear picture of its exterior design yet. What we do know is that BMW will probably launch the 4 Series GranCoupe sometime next year and it will probably go on sale a few months after that. As you can expect, the BMW 4 Series Gran Coupe is going to be sold with most of the engines currently offered with the 3 Series.