Fiat has reported a 19% drop in revenues for the last three months of 2008, as vehicle sales fell due to the global economic slowdown.
Revenues across the Fiat, Lancia, Alfa Romeo, Maserati and Ferrari brands totalled 6.3 billion euros ($US8.2 billion) during the quarter.
This compares with 7.8 billion euros for the same period last year.
Trading profit across its car operations fell 44%.
Fiat's results came as the government said it would study help for carmakers. Prime Minister Silvio Berlusconi said the government would meet next week to discuss the issue.
The BBC reports debt levels across the Fiat group rose to 5.9 billion euros, which some analysts said was a concern.
On Tuesday, Fiat said it was buying 35% of Chrysler in an alliance with the American company.