I haven't used them to dry a car, but the towels are so soft and durable that I have used them to dry anything and everything w/o leaving any residue, or fibers, or steaks. Absolutely the best towels ever.
I haven’t used them for the car so I don’t know if it will work for u. I use them in my kitchen and sometimes for the walls. They’re very absorbent and never leaves lint anywhere. It’s like old fashion kind of towel material. Very good.