The B3 GT was launched in June 2024. This model is based on the Limousine and Touring versions of the B3 Allrad, 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 B3 GT is not limited.

The engine is similar to the regular B3 Allrad.

Engine software has been further optimised. This results in an increased output of 34hp over the standard B3 Allrad. The engine produces 529hp and 730Nm torque.

The suspension setup is similar to the regular B3 Allrad.

A BMW 3-series update provides a stiffer connection between rear dampers and the bodyshell. An Alpina dome-bulkhead-strut provides additional reinforcement, improving steering precision and feedback.

The Limousine version of the B3 GT receives a stiffer rear anti-roll bar.

The wheels are similar to the regular B4 Gran Coupe, finished in Oro Tecnico with B3 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 B3 GT in Oro Tecnico.

The B3 GT 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 B3 GT model is shown on the production plaque and in the engine compartment.

Acceleration from 0-100kph is 3,4 seconds for the Limousine and 3,5 seconds for the Touring version.

Top speed for the Limousine is 308kph and 305kph for the Touring version.