The B4 GT Gran Coupe was launched in June 2024. This model is based on the B4 Gran Coupe, complimented with parts unique to this model.

Standard colors are Alpina Blue II and Alpina Green II. Additionally available colors are Fashion Grey, Brewster Green, Imola Red, Daytona Violet and Carbon Black.

In contrast to the earlier B5 GT, production for the B4 GT Gran Coupe is not limited.

The engine is similar to the regular B4 Gran Coupe.

Engine software has been further optimised. This results in an increased output of 34hp over the standard B4 Gran Coupe. The engine produces 529hp and 730Nm torque.

The B4 GT Gran Coupe has improved chassis and suspension setup compared to the regular B4 Gran Coupe. The variable sports steering and active dynamic damping control have also been extensively revised.

The wheels are similar to the regular B4 Gran Coupe, finished in Oro Tecnico with B4 GT lettering.

Unique details include GT lettering on door sill trims and steering wheels, as well as Switchtronic shift paddles in anodized aluminum.

A non-cost option is classic Alpina decor on the front spoiler and sides of the car with GT lettering, for the B4 GT Gran Coupe in Oro Tecnico.

The B4 GT Gran Coupe features small canards and splitter on the front bumper. This is combined with a unique rear diffuser in gloss black. The twin tailpipes are coated with titanium nitride for a unique black finish.

The production number of each B4 GT Gran Coupe model is shown on the production plaque and in the engine compartment.

Acceleration from 0-100kph is 3,5 seconds for the B4 GT Gran Coupe.

Top speed is 305kph.