This article relies largely or entirely on a single source. (March 2019)
|Body and chassis|
|Engine||3.0 L Straight-8|
|Transmission||4 speed manual transmission|
|Curb weight||780/785 kg|
The car mounted an 8-cylinder 2991 cm3 straight engine and 400 mm drum brakes. Maximum power was around 220-240 hp at 5,500 rpm. The chassis had been derived from that of the 4CM 1100, which proved to be too light and was subject to flex; the situation improved when driver Tazio Nuvolari asked a strengthening of the front part, and the weight reduced from 785 to 750 kg.
The car debuted at the Tunis Grand Prix in 1933 and, in that year, won the Belgian Grand Prix and others, raced by Nuvolari. In 1934-1935, however, it struggled to take the pace of the Alfa Romeo, Mercedes and Auto Union, and was replaced by the V8RI model.