The Alpina B6 3.5 is based on the 325i chassis, but uses the M30 "big six" 3430 cm3 engine, upgraded to and of torque. 0–100 km/h (62 mph) is achieved in 6.4 seconds. The engine uses custom Mahle pistons and rods. The cylinder head was ported and polished, and a hotter cam was used. Top speed is . Suspension and brakes were upgraded. Bigger ventilated disks and progressive springs were installed at the front. Only 210 cars were made from 1986 to 1990. The B6 3.5 was sold in Japan as the B6 2.7 and used the 2.7 L engine from the Alpina C2 as the larger 3.0 L engine was unable to pass emissions.