It starts with a tuned 4.4-liter bi-turbo V8 motor with 612 horsepower and 590 pound-feet of torque, which is essentially the same power unit in the Alpina B7 luxury sedan. With this much power, the Alpina XB7 has no problems rushing to 60 mph in 4.0-seconds – just half a second slower than the B7 sedan.
According to Alpina, the XB7 completes the quarter-mile run in 12.6-seconds when equipped with standard 21-inch wheels and performance tires.
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