On the high end, gas was ~$200/week. I was getting a $70 oil change every 1.5 months. I can't think of anything else off the top of my head (I only delivered for 7 months with a much slower pace at the beginning, from about January to the beginning of August of last year). So nearly 25% of my income was going to just maintenance, but the miles from driving as well as all expenses to maintain my car could be written off on my taxes. I think with everything involved I only paid something stupid low like a couple hundred in taxes.

That's a good point, and it's still probably higher than average, but one should also consider what car-related expenses someone has at a 52k/year salary job commuting 1 hour to and from work each day. (I imagine the delivery driver used their car cumulatively more than 2 hours per day, but how much more, I don't know.)

My car was sitting in parking lots, being turned on and turned off, and driven around for about 12-14 hours per day towards the end there. That only happened for maybe 2 months. After I was finished and managed to land a better paying job, I ended up getting some much needed repairs on my car that would have not been fun to make up the cost of while I was delivering.