The Fiat Seicento is a city car produced by the Italian company Fiat, introduced at the end of 1997 as a replacement for the Fiat Cinquecento, although it was also based on the Cinquecento. The Seicento did not differ much from its predecessor, retaining the same engines, chassis and general dimensions, although it did gain a minor 90 mm in length.

The Fiat Cinquecento is a front engine front-wheel-drive, four passenger, three door hatchback city car, manufactured and marketed by Fiat from 1991 to 1998 over a single generation.