Osella PA20
The Osella PA20 and Osella PA20/S are Group CN sports prototype race cars, designed, developed and built by Italian manufacturer Osella; which was first made in 1994. As per the Group CN rules of a displacement being no larger than , it is powered by a specially tuned and modified naturally-aspirated BMW S50B30 straight-six engine, producing between , and is capable of revving over 10,000 rpm. It weighs . It has competed mostly in timed hillcimb events and trials, but in its road racing career, it scored a total of 2 race wins, 4 podium finishes. It was briefly converted to a WSC, to comply with the FIA's regulations. References 

Sports prototypes
BMW vehicles
Osella vehicles
Mid-engined cars