Am I right to turn it back in?

I know exactly how you feel. I worked for some years as the office manager for a multi franchised dealership in the billing motor vehicle department. As the resident X DMV employee I got hit with this problem on a regular basis. :If you like the car then keep it. The finance companies AND Insurance companies deal with this on a regular basis with these dealerships. It turns out to be No Big Thing. In there words. Your lucky and they caught It BEFORE you plated It. The nightmare after. You wouldn't believe. My statement 'Keep It" does not mean that the Dealership will take It back. You might have a case but I've seen It before and just on the "Wrong Vin" Thing. won't win you a new vehicle. These places shuffle cars around like you wouldn't believe and mistakes ARE made. all that need happen is 1 number or letter off and the car WILL come up in most DMV-Insurance Company & finance company data basis. Good luck and chalk It up as a GOOD experience (Catching It when they did)

Did you sign the deal? That is after the approval? Then you can't change your mind. When you signed, you accepted the deal. But if you signed, and then after they want to change the details of the sale (such as higher apr, etc) you should be able to walk away, since that is not the prices, payments you signed on. They would have to call you back with new paperwork to sign. Don't do it unless it's still a good deal for you.

Yes, it will reflect badly on your credit. You signed a contract and obligated yourself to repay the money to the lender.

There's no right to cancel a car deal or to return a purchased vehicle.