How long does it take to buy a car at a dealership?

Buying a car in person often takes a few hours, though it varies widely. A test drive, appraisal of a trade-in, price discussion, credit approval and the finance office paperwork each take time, and busy weekends make waits longer. You can shorten the visit by arranging financing ahead, agreeing on an out-the-door price by phone or email, and scheduling an appointment. Doing your homework before you go is the biggest time saver.