This is all assuming that the car rental service enables you to rent with a debit card. Some do not. At first, this might seem odd since you're not paying with credit. However, some firms will examine your credit report if you decide to pay by debit card. The rental company might see it as a warning that you aren't making use of a charge card, so they're going to check and see if you can be trusted. It'll count as a hard query and can cost a couple of points on your score.
3 burea credit score