FAKE

After examining the badges for some time, I think I found the problem.

The W12 badges were ripped from a Volkswagen Phaeton / Audi A8 W12. Look at the difference in font style between the two different badges. Big difference. The BMW fonts are bolder and fatter, the VW font is thinner.

When I was in London, I saw a Mercedes E000 and a Smart CDI V12 Biturbo.