Simplify the following text for a Grade 5 native English-speaking person.
Original: The Fiat Seicento is a city car produced by the Italian company Fiat , introduced in late 1997 as a replacement for the Fiat Cinquecento .
Simplified: The Fiat Seicento is a car produced by Fiat . It replaced the Fiat Cinquecento in 1998 .