In March 2009, at the Geneva 2009 motorshow the B7 BiTurbo was introduced based on the F01 7-series.
The LWB 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 changes made to the 750i engine include modified turbochargers (in partnership with Garrett Honeywell), 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.
As customary with previous 7-series, the B7 BiTurbo features a Switch-Tronic 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 large exhaust pipes, which are very easy to notice.
For the B7 BiTurbo, Alpina claim 0-100 km/h time of 4,7 seconds and a limited topspeed of 280 kph.