Who uses the car most? I got into a recent argument with my friend about who owns his car, him or his mom. We're not talking about who bought it or anything, just who uses the car most? Both he and his mom drive the car. His mom drives it about 4 times a month, 60 mile trips. He drives it about everyday, 2-3 mile a day. His mom drives it infrequently, but she wears it out more. He drives it everyday, but doesn't use as much mileage. Who uses the car most?