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

The control system was first introduced by the company in 1993, and allows the driver to change gears via two buttons located on the back of the steering wheel.

The B6 has Alpina's own suspension system designed to give a soft ride in normal driving conditions, thus maintaining the grand touring nature of the car.

The B6's body in white was prepared at BMW's Dingolfing plant and was then sent to the Alpina factory in Buchloe for final assembly.

Introduced in 2008, the car received further improvements over the B6, this allowed the engine to generate a maximum power output of 530 PS (390 kW; 523 hp) and 725 N⋅m (535 lb⋅ft) of torque.

The increase in power was achieved by tweaking the variable valve timing on the intake and exhaust along with installing a new compressor in the supercharger which gave optimum airflow to the engine in all driving conditions.

Designed to compete in the FIA GT3 world championship, the GT3 comes with a modified version of the BMW S62 4.9-litre naturally aspirated, V8 engine found in the B6 generating 570 PS (419 kW; 562 hp) and 725 N⋅m (535 lb⋅ft) of torque.