The Alpina C1 was a modification of the E21 323i and rapidly gained favor among customers due to its enhanced performance capabilities. The C1 2.3 generated 125 kw (168 hp) and 225 Nm (166 lb⋅ft) of torque, propelling it from 0–100 km/h (0–62 mph) in 7.8 seconds and eventually reaching a maximum speed of 213 km/h (132 mph). The distinctive performance of the C1 was made possible thanks to the implementation of Mahle pistons, a unique exhaust and ignition system, dry-sump lubrication, and a 5-speed gearbox with shortened ratios. Only 35 of these cars were ever produced, making it an exceedingly rare Alpina product. When BMW introduced the 325i model, Alpina retaliated with its C2 2.5 and later 2.7 versions boasting capacities ranging from 190 to 210 hp (142–157 kW). Additionally, the brakes and suspension were improved for optimal performance.
The C1 2.5 and early C2 / 2.6* models featured the M20B23 (2,3L) engine; however, bore and stroke were adjusted to increase displacement to 2552 cm3. Alpina re-engineered the head with porting and polishing, as well as introducing harder valve springs and a more powerful camshaft. Read more
BMW Alpina (E21) C1 is a stunning example of the exciting and entertaining factory tuner coupe of the early 1980s. With a more powerful engine, improved handling and an unmistakable exterior, the C1 proved to be an early hit for the German tuning house, laying the foundations for other iconic models over the next four decades. The Alpina C1 is ready to be enjoyed on spirited weekend drives or as an excellent addition to any BMW collection.