Truck build date is 3-14 and coming up on 58k miles without a single mechanical issue. Have had the typical flashes, recalls, new SCR other than that nothing else wrong with the truck. So far the mileage is holding between 26-27 m.p.g consistently unless the wind is blowing like crazy. Oil changed at 15% which is usually 8600--8800 miles, fuel filter every other oil change and air filter every third oil change. Replaced the stock Wrangler SRA tires about three weeks ago at just over 56k miles with the Cooper Discoverer H/T Plus. The Coopers are real smooth and quiet, truck seems to ride a little better on them.