I have a 2015 328D which I purchased from Carvana for $25,000 on 6/30/18, its had 13,000 miles when purchased. It is the Luxury model, clean carfax. Personally, a diesel resale value is not high, a small portion of Americans buy them. I have upgraded the Nav system, it is still cumbersome. I would recommend finding another car. Our car is fantastic, it is great to drive and we average 40 mpg, that is mostly city driving with auto start stop turned off.