Not from MY 2011: http://www.buick.com/vehicles/current-vehicles/regal/model-overview.html

@DeltaGolf > as I said, so many possibilities Shall I wait that someone guesses the right one?
About the Buick Regal, that's just for China, no?

The Golf 5 also wasn't built in Iran like the other two were.

The Golf is originally from Germany rather than France, the 206 is smaller than the Mégane and the Golf, the Golf-based cabriolet is not called CC like the other two...

There are about a million different possibilities

And by the way, the Insignia is the only one of the three Opels currently sold in the USA (Buick Regal)

The problem is that many things could be compared between the cars, e.g. I compared countries but it was just about body shape (with an error )

Three other cars:
Renault Mégane mk2, Peugeot 206, VW Golf mk5

As two-door, too: http://www.imcdb.org/vehicle_340355-Opel-Corsa.html

Of the successors Corsa B and C there were also Sedans (but only in South America)
http://www.imcdb.org/vehicle_280461-Chevrolet-Corsa.html
http://www.imcdb.org/vehicle_331726-Chevrolet-Corsa-Sedan.html

Yeah, like this: http://www.imcdb.org/vehicle.php?id=180110

Corsa Sedan?!?

There was a Corsa sedan, Astra sedan and there is an Insignia hatchback and Wagon though...

I was mostly refering to the Insignia since it's a sedan but that's correct too + 3 cars please.