Alpina D4 in Context
Alpina is recognised by German authorities as a manufacturer in its own right, so the D4 is catalogued as an Alpina rather than a BMW, even though its foundation is the BMW 4 Series Gran Coupe. The D prefix denotes a diesel engine, in contrast with the petrol-powered B models. Within the Alpina D4 generations, the first was based on the earlier two-door and convertible 4 Series, whereas this second generation moved to the five-door liftback body, giving it a very different profile and considerably more practicality without abandoning its coupe-like roofline.
Understanding 2 generation
Alpina's approach goes beyond an engine upgrade. The company revises the powertrain calibration, suspension tuning, wheels and interior finish, and each car carries a numbered production plaque. Among Alpina D4 body styles, only the liftback is offered in this generation, so the choice comes down to specification and options rather than body type. Alpina D4 dimensions track those of the donor Gran Coupe closely, meaning the car remains a compact executive size that suits everyday use while delivering the long-distance efficiency that has always defined Alpina's diesel line.