AITA for not letting my son buy his dream car because it's too expensive and he doesn't make enough to keep insurance and gas money paid.

I'm 40f, I have a 19 year old daughter and a 22 year old son. He works full time at a local restarunt, I think it's going well for him. He only has one credit card and he's been good about paying it off. He's saved up for over a year to buy a car and he's finally reached his goal of 25k. Part of me thinks he's mature enough to handle paying for insurance, gas, and maintaining an expensive car. The other part of me says no, his salary is just barely above minimum wage, and I don't want to see him struggle. Also, he wants a Maserati and that's just so realistically not a car you can rely on, especially if you don't make very much money, him buying it would put a strain on his pocket, plus they apparently break down often. It's definitely not a reliable car. <br><br>He went to the dealership and learned insurance was gonna be 1k a month and he was like, "oh wait I don't qualify for the loan, I'm too young and don't have enough credit." He came to me and asked me to co sign for him and I said I couldn't do that. He got angry and said he's felt like I never help him with anything. I felt bad, because I don't know if I was being overprotective here. Maybe he is mature enough to be able to handle the finances of owning an expensive car. Now he's going to look at other cars and see if their insurance payments are cheaper. I feel like I'm in the wrong. AITA?