Alpina B6 Biturbo Beats BMW M6 F13 at Top Speed Challenge [Video]
Sport Auto has pitted the 2013 Alpina B6 Biturbo against the F13 BMW M6, with the straight line tests offering an interesting conclusion. The B6 managed to hit a top speed of 208 mph (334 km/h), as shown by its speedo, while the magazine’s GPS unit showed 204 mph (328 km/h).
The value tops that registered by the M6, which, fitted with a M Driver’s Package, managed to reach 89 mph (305 km/h) and this also beats the official figures provided by Alpina, which show that the car can reach 199 mph (320 km/h).
Compared to the M6, the B6’s 4.4-liter twin-turbo unit is heavily tweaked using Mahle pistons, a new cooling system, a Akrapovic titanium exhaust system that also saves weight, as well as a modified eight-speed auto. While the M6 produces 560 hp and 502 lb-ft (680 Nm), the B6 offers 540 hp and 516 lb-ft (700 Nm). As for the 0 to 62 mph sprint, the M6 finishes it in 4.2 seconds and the B6 needs an extra 0.2 second.