What should I look for in a used Alfa Romeo GT coupe?
There are no reports of major problems with the engines or suspension yet, but the front undertray is prone to grounding as you drive over speed bumps, which is a legacy of the 156 platform. You need to look underneath to make sure there are no nasty scrapes from a heavy hit.
The electrics can cause a few headaches, too, but they tend to be minor irritations.
The interior probably won't stay rattle-free for long. Look for scuffs on the backs of the front seats if the rear seats have been used to carry passengers. Any damage here can be expensive to repair.