Hey guys, I have a friend who is in a bit of bad luck and has to get rid of his 2007 Mini Cooper S.

It won't pass smog among other things.

He is looking to by something used with good gas millage and bonus points if its fun to drive and cheap to repair. Any recommendations? what would you get? (year/model)
Let's top it at 20k.
All your ideas are welcome but no, he will not get a Camaro.. (I tried)