Originally Posted by Beantown Bronco
Let's just be honest. If all you really want is fast, fun and fuel efficient, go spend $20-25K at a Mazda dealership and call it a day. If you're looking for more of a status symbol and are willing to spend more and sacrifice the fuel efficiency, then this thread has you more than covered.
However, his wife told him to get a fast car. I know I'm generalizing, but that could easily mean "nice car." If he has $40k to spend and she has an interest in what he's driving, I don't think she wants her husband in a Mazda.
Or maybe I'm way off. Completely possible.
Also, he mentioned that he was looking at a convertible.
I might suggest a slightly used Boxster, unless a back seat is important. A little better gas mileage than the V6 Mustang, looks good, very fun to drive.