BMW and its official partners at performance haus Alpina have taken the wraps off the new BMW Alpina B5 Biturbo Sedan, which now joins the B5 Biturbo wagon as a more civilized take on supercar-level 5-Series performance than BMW’s own M5.
The B5 Biturbo gets power from a twin-turbo 4.4-liter V8 making a crazy 540 horsepower and 538 lb-ft. of torque, enough for a 0-60 mph dash of less than 4.5 seconds. A ZF 8-speed automatic transmission puts power to the road, with a smooth but well-honed ride thanks to Alpina’s sport-tuned variable damping suspension.
Would you take the BMW M5 or the Alpina B5 Biturbo? One of each, please, thank you.