The Alfetta Berlina was introduced to the public in 1972 as the successor to the Alfa Romeo Berlina 2000 even though both models were offered in parallel for some years. It was a completely new developed car that had nothing in common with previous Alfa Romeo models except their engines. The Alfetta GT coupé was introduced in 1974 as a four-seater, originally intended as a successor to the Giulia Sprint coupé (often called "Bertone"). Same as for the Berlina both coupé models were built in parallel until 1977.

The name Alfetta refers to the former Alfa Romeo racing car Tipo 158/159 (called Alfetta) which won the first and second official Formula 1 World Championship in 1950 and 51. The 1950/51 and 1972 Alfetta cars both have a transaxle construction: engine at the front, the gearbox and the clutch as well as the differential at the rear.

The Alfetta was built in several different limousine and coupé versions which are described in the following. Actually some thirty descriptions are online, more will come. The ordering is Alfetta Berlina production year first and then Alfetta GT (also production year).