My grandad paid for my car because he nice guy and he has money. My parents set the price limit at $8,000. He said he would pay 5 grand so I found a car the was 5 grand and saved my parents some money.
Most of the time I will pay for gas,taxes,repairs, and modifications. Sometimes my dad will chip in a tank of gas but I dont take that for granted and usually drive normal so as not to waste it.
I also bought the wheels I am about to get in a week.