Big Fiat's are not usually a wonderful thing. Probably the only exception was the FIAT 130 Coupe.
The previous FIAT Croma was built on a shared platform also used, with various modifications, for the Lancia Thema, Saab 900 and Alfa Romeo 164 models. It was not the worst in class but was far from the best. Now they are trying again with the new one sharing a GM platform. Second try for the Croma name and you have to hope its more successful this time. It needs to be.
Preview pictures on the FIAT Home Page.