The B7 BiTurbo is based on the BMW 750i. It represents the third generation Alpina 7-series model and replaces the previous generation E65-based B7.

In March 2009, at the Geneva motorshow, the B7 BiTurbo was introduced initially in short-wheel-base RWD version.

The long-wheel-base version of the B7 BiTurbo was introduced at the Tokyo Motorshow in October 2009. Interestingly, due to the global economic crisis Alpina was the only German manufacturer who attended this motorshow. The 4-wheel-drive Allrad version of the B7 BiTurbo was introduced at the 2010 Geneva motorshow.

The LCI version of the B7 BiTurbo was introduced in late 2012.

The B7 BiTurbo engine is a major departure from the 4.4 liter V8 supercharged engine from the previous generation E65-based B7. Rather, it is based on the 4.4 liter V8 biturbo engine from the 750i.

Modifications include custom turbochargers in partnership with Garrett Honeywell, custom intercoolers and new pistons. The power output is 507 bhp and torque is 700 NM, available from 3000 rpm. The fuel consumption is 11,9 l/100 km according to Alpina.

The LCI version of the B7 BiTurbo encompassed significant changes to the drivetrain. The engine management computer was changed from Siemens MSD 85 to Bosch MEVD 17.2.8. This allowed power to be increased to 540hp and 730Nm.

Initially, the B7 BiTurbo was available with the 6-speed ZF 6HP26TÜ gearbox. The LCI version of the B7 BiTurbo featured the much faster 8-speed ZF 8HP70 gearbox.

The brake discs measure 374 mm at front and 370 mm at rear, same as the E65 B7.

The B7 BiTurbo is 15 mm lower at front and 10 mm lower at rear than a standard BMW 750i.

The wheels feature an updated design of the classic Alpina wheels. The wheels are 21″ with 245/35 tires at front and 285/30 at rear.

Inside the B7 BiTurbo is equipped with sport seats in Alpina design leather, new instruments with blue background and red needles, luxury wood “Myrtle”, a hand-stitched leather steering-wheel, Alpina floor mats, Alpina door sills and a silver-plated production plaque. The exterior changes are very subtle, front and rear spoiler lips are fitted. These make the car more stable at speed while maintaining a very low CW-value.

The B7 BiTurbo also has two twin exhaust pipes, which are very easy to notice.

For the B7 BiTurbo, Alpina claimed 0-100 km/h time of 4,7 seconds and an electronically limited topspeed of 280 kph. After Michelin was able to provide suitable tires, the topspeed limiter was removed.

The LCI version has a 0-100 km/h time of 4,6 seconds and a topspeed of 312 kph.