<prompt> Human: Ive never asked for any big loans, because I have enough money to buy pretty much anything I need.My credit score is close to top and I never had any overdue payments.But recently I bought a new car, and my buddy recommended me to ask for a auto loan to have a big loan on my credit history, because it can help me to receive better conditions on mortgage in future Im really going to buy a house in next 3-5 years.When dealer heard that I never asked for auto loan before, he told me that Im first time buyer, and it does not matter how high my credit score is, they can offer me no lower than 10 APR, cause I never had payed off any big loans. Of course I rejected his generous offer, but now I worry about to have same situation with mortgage in future.So was that just a dealers dirty trick to make more money on my deal or I really need to have a big loan records in my credit history to get best conditions for loans in future?  <response>: Would it help? I suppose, very minimally as it shows you pay debts back on-time. What I would advise is getting a credit card, putting stuff youd normally buy on there, and paying it off every month in full. That builds credit history exactly the same. I would not advise to take a loan out at any interest rate just to build credit. Especially on an item that depreciates so fast e.g. new car. Id go one further, having a car loan actually makes you have higher debt to income ratio, and hurts chances of a higher mortgage amount. 