The 7th-generation 5 Series is months away from being discontinued, but the G30 and G31 models are not going out without the proverbial bang. For the B5 GT limited-run special edition available in both Sedan and Touring body styles, Alpina is unleashing the most powerful engine it has ever installed in a road car. The ubiquitous twin-turbo 4.4-liter V8 is now pushing out a colossal 625 horsepower and 627 lb-ft of torque.
Power is transmitted to all four wheels through an eight-speed ZF automatic which also benefits from upgraded software. As a result, the 0-62 mph sprint is completed in less than 3.4 seconds for the sedan and less than 3.6 seconds for the Touring. The top speed is equally impressive for a family car, with 205 mph for the sedan and over 200 mph for the Touring, figures higher than any M5. The B5 GT will also sound meaner thanks to the tweaked Alpina sports exhaust system featuring quadruple titanium tailpipes finished in black.
Alpina will offer the B5 GT in its standard blue or green exterior colors. However, the tuner will also provide six specialty ones: Arctic Race Blue, Petrol Mica, Verde British Racing, Chalk, Imola Red, and Daytona Violet. Inside, Nappa leather is standard, but full Merino leather is available, along with numerous trim options and other interior upgrades, like Alpina’s Walnut Anthracite fine wood trim.
Its interior is finished with Nappa or Merino leather, walnut wood trim, and B5 GT lettering. The sports seats are said to improve lateral support and gain Alcantara centers to improve comfort. A digital instrument panel sits behind the steering wheel. Each car also gains a unique stainless-steel production plaque attached to the center console, while the engine bay displays the model’s production number.
Other standard kit includes a heated steering wheel, a Harman Kardon surround-sound system, and Anthracite roof lining. The B5 GT is limited to just 250 examples, with order books open now. Alpina said deliveries will start in July.