The Deauville had an independent rear suspension very similar to that used by Jaguar, and ventilated discs in all four wheels. It shares its chassis with the Maserati Quattroporte III.
A total of 244 Deauvilles were produced. There were three Deauville variants:
- the early series 1 (1970–1974: serial number 10##, 11## and 12##)
- late series 1 (1975–1977: serial numbers 14##)
- series 2 (1978–1985: serial numbers 20## and 21##).
One Deauville station wagon was made for Mr. De Tomaso's wife. There were also two armoured Deauvilles produced, one for the Belgian Royal Family and one for the Italian government. One of these cars is displayed in the Museo delle Auto della Polizia Di Stato in Rome, the other was owned by an American and participated in the 1997 Concorso Italiano.