Hello, I have almost 21,000 on mine and love it! I have a Big Horn 4x4 crew and it has been a real pleasure. I traded my 07 hemi that I loved for this truck and it is a perfect balance of power and control. The smell in the cab issues seem to have been mostly the 4x2 models. A lot of the issues that were discovered by the 2014 owners have been addressed and though there may still be issues, the odds are much more in your favor. I just logged 28mpg in mine today driving to work. I have done this several times though I would say my average is 23-24 with a mix of city and highway driving. I have the 3:92 gears and would have preferred the 3:55's for better mileage if I could have picked. I wouldn't go the V-6 gas route for many reasons and I sure as all that's Holy wouldn't go the supercharged gas route from Ford. That would be very hard to control the throttle response and thus very difficult to obtain the gas mileage Ford claims. That and I have never seen a gas supercharged or turbo charged engine with the word longevity in the same sentence with anything other then theory. I could be wrong but it's not something I would bet on. Good luck in your choice. I love mine.