8. He likes to talk about all the ones he “used to own”
Go through the list of cars you wish you’d had at some point in your life, and he’ll tell you he used to have one. Of course, he never gives enough details -- the kind only an owner would really know -- to prove he’s ever had any of them in real life. And where I come from, that's called lying.
9. He’s a know-it-all
The wannabe car guy absolutely has a solution for everything, regardless of whether or not they have any clue what they’re talking about. A true car guy wants the best solution possible, and is comfortable enough to admit if an issue is beyond their area of knowledge.