The M5 is expected to pack around 580bhp, a chunk more than the 500bhp of this car, but extend your right foot in the B5 and you soon start to suspect that Alpina’s claim might be a touch on the ...

Explore the thrilling dynamics and luxurious appeal of the Porsche 911 Dakar and the Alpina B5 Touring Biturbo in this head-to-head comparison.