credit score needed for car loan

Credit Score Help. Will having 2 car loans help or hurt my qualifications for a mortgage?

I just purchased a 21,000 car that I will payoff in 5 years. My brother in law wants to purchase a similar car but since he would always pay everything in cash, he has little credit and was told he needed a co-signer to qualify.
If I co-sign for him would that hurt me when I apply for a house 1-2 years from now?
Also once his credit builds up can he take me out of the loan down the road?
thanks

It would lower your credit score because you are on a new loan. However, if you trust him and he pays his payments on-time, after a while he can build up credit and refinance his car on his own and take you out of his lown. Then, it will boost your credit.

Checkout http://www.howtoestablishgoodcredit.com/Credit_Articles/index.php
There are lots of articles there, related to your question, which you can find useful to boost your credit