Since the launch of the F10 M5, rumors about the BMW M6 has increased in quantity and quality. There is a lot of similarity between the M5 and M6 models. The engine and the gear box are the same in both cars which is the prime reason for M5 buyers to compare the two BMW cars. Given that the V10 model is in the outgoing phase the M6 would have to come up with lots of additional stuff. The car had been displayed to the consumers with lightweight composite materials in its construction being used and F1-derived V10 engine, and adjustable suspension. Performance was therefore at its best even though the looks did not match the expectations. As per information received the M6 should be a better car by looks as well as driving experience.
Source: topspeed