We Are the Certified Pre-Owned Experts! Our mission at Certified Pre-Owned Experts is to direct you to the dealer that will help you find the certified pre-owned vehicle that’s right for you. Enter your zip code and press Submit to be taken to the certified preowned dealer near you. Enter your ZIP Code 2014 BMW 4-Series 2015 BMW 4-Series 2016 BMW 4-Series 2017 BMW 4-Series