I got my license at 16, but I didn't buy a car until I was 20. I worked part-time minimum wage at a couple of retail stores until December '07. I had (and still have) a lot of college bills and had to pay for all my insurance, so until recently I never had enough money to buy a halfway decent car.
My father would either drive me to work in his 98 Mazda MPV or I would drive into work and he would drive the car home. It was putting a strain on us because he was the only driver in our household at the time. We have a 96 Taurus wagon he was going to give me, but the rear engine oil seal was leaking like a sieve. I knew jack E36 M3 about working on cars back then, couldn't afford any tools, and the cost to have it repaired at a shop would have been over $2000, which we didn't have.
This went on until I was nineteen. I could only afford a $500 or less car, but my dad couldn't drive me for much longer. We almost pulled the trigger on a smokey '80s Accord that shook like crazy at idle and an 80's Volvo 740 turbo sedan with starting and electrical problems up the wazoo, but eventually I settled on a 92 Nissan 240SX coupe. I've been over the laundry list of problems my old basket case had ad nausem, so I won't repeat it again unless I'm asked, but somehow it survived one very long year of use and abuse before it gave up the ghost. I also credit it with cementing my preference for RWD cars. I probably wouldn't have bought my RX-7 if I didn't like or buy my S13.