What is it?

This is the fourth Alpina based on BMW's 7 Series - the first on the new model. It uses the same twin-turbo 4.4-litre V8 found in the 750i. With 506bhp under the bonnet it is claimed the B7 Biturbo will do 0-62mph in 4.7 seconds and top speed is electronically limited to 174mph. Peak torque of 516lb.ft is available from 3,000 to 4,750rpm and a six-speed 'SWITCH-TRONIC' automatic gearbox ensures that there should always be plenty of performance available. The combined-cycle fuel consumption of 22.7mpg doesn't seem too bad either all things considered.

Why is it here?

Traditionally the big Alpina saloon is as close as we ever get to a BMW M7 so the B7 Biturbo fills a small gap in the BMW range. Most of the cosmetic changes are well integrated and subtle; the spoilers reduce lift and channel air to the oil coolers for engine and transmission for instance. There is no mistaking the classic Alpina 20-spoke alloy wheels though, measuring 21-inches in diameter they are wrapped in low-profile 245/35 tyres at the front and 285/30 tyres at the rear.

Illuminated sill tread-plates set the tone for the luxurious interior. The seats are covered in Pearl leather and the steering wheel has a hand-stitched leather cover. The steering wheel also houses the manual controls for the transmission and the instruments have blue faces with red pointers. Customers can also chose between laurel wood trim from the Pacific coast of the USA or Piano Lacquer with silver diagonal 'rhombs'.

Show stopper or floor filler?

In its blue paint and with the traditional Alpina modifications the B7 is a good looking machine. Somehow it manages to be both subtle and eye catching. Geneva show goers may not notice it at first.