[1] Changes to the engine include an Alpina specific block made by Steyr, a forged crankshaft and low compression Mahle pistons.

This behaviour is possible thanks to the particular layout, where the intake system has a throttle valve located at the air inlet of the compressor, so it's possible to control the boost pressure, maintaining it at a preset level over a large rpm range.

In this way the engine is able to deliver an excellent torque at low and medium rotational speeds and a considerable amount of horsepower at high rpms.

The B5 comes with 19-inch forged multi-spoke alloy wheels and Michelin Pilot Sport 2 tyres measuring 245/40 ZR19 at the front and 275/35 ZR19 at the rear.

[4] The B5 has Alpina's own suspension system designed to give a soft ride in normal driving conditions.