With the tail full of luggage (capacity ... Considered minimal transportation in its own country, the Model A 500 Fiat seemed much more than that to sporting drivers in other parts of Europe.

What happens when the ultra-cute Fiat 500 is stretched more than two feet in length? It becomes a much more practical car, with two more doors, a roomy rear seat, and decent cargo space.

It doesn’t have much backseat or cargo room, either. The two-door, four-seat Fiat 500 competes with subcompact cars like the Mini Cooper. A cabrio version, dubbed 500c, is available, and buyers ...