Alpina’s achingly cool B7 has been updated alongside the BMW 7-series

Alpina has released details of its new B7 sedan, the hot 7-series derivative designed to rival the in-house BMW M760iL and Mercedes-AMG S63. Featuring a heavily boosted twin-turbo V8 under the bonnet, the B7 differs from its Bavarian stablemate by doing without those four extra cylinders, but fights back with nearly as much power and slightly less weight to have to deal with.

As with the standard BMW 7-series, the new B7 has adopted the new… erm, large grille, but as Alpinas are classically based on non-M Sport base cars, it does at least stick with the standard 7’s more understated styling. Underneath the grille is the classic Alpina motif though, while other classic Alpina elements such as the needle-spoke wheels and quad oval exhaust outlets complete the picture.

> Click here for all you need to know about the new BMW 7-series

The B7’s V8 starts its life in the new 750i, but builds on that car’s standard 290kW, producing a peak output of 446kW. Torque is also up by 50Nm to 800Nm, spread liberally between 2000rpm and 5000rpm. These considerable figures result in some exceptional performance numbers, reaching 100km/h in just 3.6sec, four tenths faster than the standard 750i.

In fact, nearly all of the B7’s figures are favourable when compared to the V12-powered M760iL. The V12 BMW features a power advantage of just 2kW, and torque is up by 50Nm, but thanks to its massive 6-litre engine, weighs in a hefty 216kg heavier.

Keeping the 7-series’ mass in check, the B7 features a twin-axle air-suspension system, active integral steering – BMW’s rear-axle steering system – and an active anti-roll mitigation system, all of which are seen on the standard car in various guises, too. Alpina has also engineered in its own Alpina Sport+ mode into the selectable drive modes, combining a bespoke calibration for those aforementioned chassis elements and a 15mm drop in overall suspension ride height.