 Originally I touted the 2015 Ford Explorer as a great SUV that was underrated, but since I started getting nauseated from the exhaust entering the vehicle, I have since revised my review.  First off, DO NOT purchase this SUV, it has serious problems with exhaust entering the cabin during hard or labored engine use.  Ford has denied any problems with this SUV, but so far the NHTSA has had over 450 complaints on models from 2011-2017 and there has been one near fatality from passing out from alleged CO exposure.  Ford will not refund your money or put you into another vehicle without a fight.  They deny that there is anything wrong with the Explorer and will keep you at arms length until your warranty expires.  This could have been a very pleasant experience between Ford and us, but now we are looking at ways to get out from under this SUV without taking too much of a beating on the trade in.  Ford should have redesigned the air extractors and brought them up on the vehicle instead of next to the tailpipe in the fist couple of years, so that people who are buying now will not have to suffer like the rest of us.