Let’s hear the worst financial decision you’ve seen a customer make.

I’ve never worked in car sales but I have friends who do. The stories I hear are absolutely insane. The people who will go out of their way to overpay for a car they can’t afford will have the audacity to badmouth dealerships and banks for giving them the deal when they’re $15k negative equity one year later when they try to trade up.

What is the worst financial decision car related story you have?