Longtime Fiat model Crossword Clue

 The longtime Fiat model crossword clue is UNO. It is a 3-letter word. 

The Fiat Uno is a subcompact car that was produced by Fiat from 1983 to 2013. It was one of the best-selling cars in Europe during its production run. The Uno was known for its fuel efficiency, affordability, and simple design.

The Fiat Uno was introduced in 1983 as a replacement for the Fiat 127. It was designed by Giorgetto Giugiaro, and it was built on a new platform that was shared with the Alfa Romeo 33. The Uno was powered by a variety of engines, including a 1.0-liter four-cylinder engine and a 1.4-liter four-cylinder engine.

The Fiat Uno was a popular car in Europe, and it was also sold in other parts of the world, including South America, Africa, and Asia. It was discontinued in 2013, but it remains a popular car among collectors.