Hi - I am looking for a used Nissan Altima to buy and checked out a 2011 Nissan Altima with 18K mileage on it. The price is $12K. According to the seller, there is no damage/accident on the car and that he bought the car from an auction. I showed the car to a car mechanics, and the mechanics said that there should be a sticker under the hood showing the year/model/etc. The car looks fine though. How can I check if a Nissan Altima has an accident or not? The VIN number is 1N4AL2AP3BC157225. Thanks in advance.