I have a ‘15 with 97k miles. What can i say…….its a truck….. I’ve replaced the rear camera, both front wheel bearings, some bolt on the exhaust manifold (had the dealer do it under warranty), 3 way heat valve, rear driver side brake rotor (caliper seized), clear coat is pealing off the front bumper (just like a piece of shit chevy), rear bumper is rusted (even though it had a rust proofing applied), remote start really works, every single winter i get “immediate air suspension attention required” but i never do anything about it. One year I actually put a space heater behind the rear passenger wheel to melt the snow that was impacted all over the suspension pump.
Other than those few things, it’s been an excellent truck. I do my own maintenance, and this truck is FAR BETTER than my old f150 lariat. More power, excellent mileage, and extremely smooth ride. Now, would i buy another diesel?? Don’t know. I HATE the extra $1 to $1.50 more than gas per gallon sometimes, and i don’t care for the $40 filters !!
My best fuel mileage was 29mpg driving like an old man, worst was 18mpg pulling my enclosed cycle trailer with two 800# cycles in it (total weight around 6000#) average in town is 20-22 ish, highway with the cruise set at 75 usually get anywhere from 24-27 depending on the weather, winter is usually 24.
Good luck, like i said, it’s a truck……