ALPINA B4 Gran Coupe Outpunches the B3 with More Power and Torque

After a short teaser campaign, ALPINA has unveiled the very first B4 Gran Coupé. It joins the B3 Saloon and B3 Touring in the Buchloe portfolio, with even more power. Namely, the future member of the BMW Group has extracted 495 hp from the straight six-cylinder. This makes the 3.0-litre twin-turbo unit 33 hp more powerful than the S58 engine in the B3 models.

In addition, ALPINA engineers have also increased maximum torque by 30 Nm to a total of 730 Nm. These considerable gains were achieved by installing a newly developed exhaust system and optimising the engine software. Thanks to the improved drivetrain, the B4 Gran Coupe reaches 100 km/h in 3.7 seconds. This makes it a tenth of a second faster than the B3 Sedan and 0.2 seconds faster than the B3 Touring.

At idle, the elegant Grand Tourer reaches 301 km/h. This makes it a tad faster than the Touring (186 mph or 300 km/h), but slightly slower than the B3 Saloon (188 mph or 303 km/h). All torque is available from 2,500 rpm, while full power is not available until 5,000 rpm. To handle the engine’s extra power, ALPINA worked with ZF to adapt the eight-speed automatic transmission. The chassis and suspension are also part of the package.

Available exclusively with xDrive, the B4 Gran Coupé rides on elegant 20-spoke forged wheels at all four corners. Available in either black or anthracite, they come with bespoke 255/35 ZR20 front and 285/30 ZR20 rear Pirelli P Zero tyres. Despite being a 20-inch wheel, it remains impressively light at just 12 kilogrammes. In typical ALPINA fashion, the new B4 makes subtle changes to the bodywork, such as discreet spoilers at the front and rear. The most obvious modification is at the rear, where the aforementioned exhaust has four tailpipes flanking a diffuser. The retro-look graphics on the sides are reminiscent of the 1980s, while the otherwise thoroughly modern car is a mixture of old and new.

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