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.