[Number 3]

Well I had an SS and it’s one of a few cars I now wish I had. They run almost as much as new right now.

I laughed at your original post because yes a sports car can be profitable. The Corvette has been wildly profitable for GM. But if your discussion is on 4 doors, then sure but it depends on a lot of other factors involved in developing any car.

As mentioned the G8 outsold the SS, but the SS was the G8 GXP and with no data I’d guess the GXP didn’t outsell the SS. And used GXPs, like the SS go for original sticker.

And whether any of them were profitable is a guess, only GM knows. The cost to make a Holden a Chevrolet or a Pontiac was some badging and a front fascia which is nominal investment. And I know there wasn’t a lot of validation done for the US market. But overall you’d have to look at the Commodore and Statesman that were shipped Globally as the Chevy Lumina and Vauxhall VXR8 and the Caprice as well as a very little known Buick Park Avenue.

So out of all that and a Gen5 Camaro all of of Zeta 1 and Zeta 2 was it profitable? No idea.