The 1900 was offered in two-door or four-door models, with a new 1,884 cc (bore , stroke ), , four-cylinder
twin cam engine. It was spacious and simple, yet quick and sporty. The slogan Alfa used when selling it was "The family car that wins races", not-so-subtly alluding to the car's success in the
Targa Florio, Stella Alpina, and other competitions. In 1951, the short wheelbase 1900C (c for corto (Italian for short)) version was introduced. It had a wheelbase of . In the same year, the
1900 TI with a more powerful engine was introduced; it had bigger valves, a higher compression ratio, and was equipped with two twin choke carburetors. Two years later, the
1900 Super and
1900 TI Super (also 1900 Super Sprint) with a 1975 cc engine were introduced (bore increased to , stroke unchanged). The larger engine size increased the power output to . Transmission was a 4-speed manual on basic versions and 5-speed manual in Super Sprint version, the brakes were drum brakes. The 1900 had independent front suspension (
double wishbones,
coil springs and hydraulic telescopic
shock absorbers) and
live rear axle. The first of the 1900 came fitted with 6.00-16 Pirelli Stella Bianca, and then in 1952 moved to the radial 165HR400 Pirelli Cinturato. Production at the company's Milan plant continued until 1959: a total of 21,304 were built, including 17,390 of the saloons. The chassis was designed specifically to allow
coachbuilders to rebody it, the most notable of which was the
Zagato designed, 1900 Super Sprint coupé, with an improved engine and custom body design. The
Alfa Romeo 1900M AR51 (or "Matta") is a four-wheel drive off-road vehicle based on the 1900-series. ==Coachbuilt versions==