Spied: BMW X6 prototype

Spy photographers have captured what appears to be the first prototype of the mysterious BMW X6 crossover. The X6 is believed to be a four-door crossover-coupe with a sloped roofline and sporty handling. BMW engineers have gone to great lengths to disguise the shape of the car's roof, but all indications are it will look something like the Volkswagen Concept A.

Spies say they were first unsure of the identity of this vehicle, since another X5 spin-off--the V5--is said to be in the works. But the V5 is supposed to be a uniquely space-efficient vehicle in the guise of Mercedes' R-Class, and this prototype doesn't seem to fit that description.

The X6 is likely still two years away from showrooms. Given its extensive component sharing with the new X5, that time-frame could be accelerated slightly. Gallery after the jump...