According to sources, Fiat plans on introducing a 4-door version of the Fiat 500 for the 2011 model year. And, if these sources are correct, this version will be called the Fiat 600.

The design of the Fiat 600 will be modern, yet retro, and artsy like the current look of the 2-door 500. The 600 is expected to be longer and wider and it will be built at Fiat's Mirafiori plant in Italy.