Instead of the original 6-speed manual and 4.9 L (S62) engine featured in original Z8, the Alpina came only with an automatic transmission, utilising a 5-speed BMW Steptronic transmission mated to a 4.8 L Alpina-tuned BMW M62 V8 engine from the Alpina E39 B10 V8 S. In order to complete the car's transition from a sports car to a refined grand tourer, a softer suspension setting was used.