Powertrain

The aluminium 4395cc V8 aggregate yields 507hp (373 kW) at a moderate 5500rpm, with a maximum torque of 700Nm available between 3000-4750rpm.

Two especially for ALPINA constructed turbochargers with generously-dimensioned turbine vanes are responsible for the forced induction. Thorough exploitation of the engine’s potential was achieved by means of optimising the indirect intercooler (air-water/water-air) with its short intake paths and flow-optimised intercooler tracts.

High-performance pistons are at work in the cylinders, carefully developed to harmonise with a compression of 9.2:1 and a maximum turbo boost of 1.0 bar.  The result is a formidable specific output of 115hp (85kW) per litre, with a maximum average compression of 20.1 bar, a benchmark even amongst established sportscars.

One look at the torque and power diagram is enough to highlight that the B7 Bi-Turbo will pull-away fiercely and effortlessly from low revs. Peak torque is available within an unusually broad range from 3000 to 4750rpm. This wide powerband coupled with the exquisitely geared ZF six-speed sport-automatic transmission indulges the occupants with remarkably high levels of smooth drivetrain comfort in every driving situation.

The ALPINA SWITCH-TRONIC, which has been programmed to shift exceptionally smooth and comfortable in Automatic mode, offers different shift characteristics for every taste and situation thanks to the additional Sport and Manual modes.

Driving the B7 Bi-Turbo becomes an altogether different experience when using the buttons found on the back of the steering wheel for manually selecting the gears of the automatic transmission. This ensures shifts take place within a few hundred milliseconds and with only minimal interruption to the transmission of power, favourably comparable even to the best twin-clutch transmissions. As a result, the B7 Bi-Turbo sprints from 0-100 km/h in 4.7 seconds, vehemently pressing on to an electronically-limited 280 km/h top speed.