The B8 Gran Coupe is based on the BMW 840i xDrive Gran Coupe and replaces the previous generation F06-based B6 Gran Coupe.
In March 2021, the B8 Gran Coupe was introduced on Youtube, as the 2021 Geneva motorshow was cancelled.
The B8 Gran Coupe engine was introduced in the F01 B7 BiTurbo and is based on the BMW M50i engine, which has been modified to 621hp and 800Nm. The maximum torque is available from 2000rpm to 5000rpm.
To facilitate the increased power, the cooling system has been modified with three external coolant coolers, an enlarged transmission oil cooler and custom air/water/air intercoolers with 50% more cooling surface.
The B8 Gran Coupe has been homologated to the latest Euro 6d-ISC-FCM emission standards and features four catalysts to reduce nitrogen oxide emissions and two large gasoline particulate filters. An active exhaust system allows the sound to be restrained in Comfort mode or more pronounced in Sport mode.
The only available gearbox is an 8-speed Sport-Automatic transmission (ZF 8HP76) with Switchtronic. The gearbox is modified to handle the massive torque of the B8 Gran Coupe engine. Additional gearbox cooling is provided by an aluminium oil sump located in the underbody.
An electronically-variable limited-slip differential is installed on the rear axle, with a locking torque of up to 2000Nm.
The B8 Gran Coupe suspension is based on the 840i xDrive Gran Coupe. The active suspension can be configured between Comfort+, Sport and Sport+.
Front axle struts with hydro mounts enhance ride comfort in combination with Eibach springs. Stiffer suspension strut support mounts provide improved stability during dynamic lane changes. Reinforced sway bars
on the front axle and stiffer lower wishbone mounts increase lateral dynamic properties.
The standard Integral Active Steering offers direct steering response with exceptional feedback and improves overall agility. The Active Kinematics Control System from ZF enables the wheels of the rear axle to pivot a maximum of 2.3° left or right. The driver can choose from three steering modes: Comfort, Sport and Sport+.
Wheels are forged 21-inch Alpina Classic wheels with 235/35 ZR21 front and 285/30 ZR21 rear Pirelli Pzero tires.
The brake system of the B8 Gran Coupe has four-piston fixed brake calipers from Brembo with 395x36mm brake discs on the front axle and floating brake calipers with 398x28mm brake discs on the rear axle. Brake calipers are finished in blue with white Alpina logo. Optionally, a high-performance brake system with light-weight drilled brake discs and highly heat-resistant brake pads is available.
The B8 Gran Coupe undergoes the same interior changes as usual with Alpina. Cluster gauges are custom Alpina with classic blue background combined with steering wheel trimmed in Lavalina leather. Additionally, interior trim is fine Alpina wood or piano lacquer with Alpina logos. A no-cost option are Alpina badges in the seats. Optionally, a custom interior in Lavalina leather can be ordered.
Standard equipment includes Merino Leather, comfort seats, seat heating, soft-close doors, Alcantara headlining, leather instrument panel and panoramic glass sunroof.
The full-colour digital instrument panel in LED technology features a distinctive Alpina design. In Comfort mode it offers a classic look: instruments with a blue background, red needles and clearly legible figures. In Sport mode the display changes to dynamic style with green drag indicators. It is also possible to select an Eco Pro mode. A typical Alpina feature is the centrally positioned permanent digital speed indicator.
In addition to traditional Myrtle wood interior trim, two further trim variants are optionally available: Piano lacquer and new Natural Walnut Anthracite. Each of the wood trim variants features the Alpina roundel logo.
For the exterior, the changes are limited to an Alpina frontspoiler, rear diffusor and Alpina badges on the rear. A non-cost option is the classic Alpina decor on sides of the car and frontspoiler.
Acceleration from 0-100kph is 3,4 seconds.
Top speed is 324kph.