91,450 on my 2012 scab, purchased July 2016 w/ 60,000. Overall has been trouble free to own. I am pretty easy on it and it stays on pavement 90% of the time. But the previous owner used it in the dirt quite a bit. How these trucks age really are dependent on how they are driven and what the owner does with them.
-New Ko2 around 75k miles
-CV boots in front twice
-Both side rockers of the cab were severely rusted (soft metal that you could put your finger through) and were replaced under Fords 5 year corrosion warranty just before the truck was 5 years old in 2017 (A $20k warranty fix at the body shop for both sides). I undercoated the truck with Rustoleum matte black rust reformer and it is held up great after 2 winters. I also do a coating of Amsoil HDMP every fall when I flush out the rockers and this has also been a big help. I give the shocks a heavy coat of the HDMP just before winter too to keep corrosion off of them from the salt. In the spring I scrub the shocks clean to remove the HDMP coating and they look brand new. This process is a must if you live in areas where they use salt on the roads.
-New gauge cluster (half the screen burned out randomly around 80k miles).
-Door locks sometimes act up and wont lock/unlock, I notice it the first it gets cold at the start of winter. Annoying that I can't get it to replicate for the dealer.
-P0320 code every so often, truck will idle rough, go into limp mode and die, I clear it with the SCT tuner and it will run fine. Can't figure this one out and haven't been able to replicate at the dealer. It happened at 70k miles and again at 90k. From what I understand it is the crank position sensor.
-Brakes (pads and rotors) done at 90k
My truck has had the PremiumCare Ford warranty that originally expired Aug 2018. I renewed it just before it expired so I am good until 106k miles or 3 years. I've taken it to the dealer any time I've had a problem (besides that intermittent door lock and p0320 code issue which they can't replicate) and they have taken care of everything for a $50 deductible. The warranty is a great peace of mind thing to have.
I do want a Gen2 Raptor badly, but this one has been a solid truck and I am still enjoying it. It would be tough to see it go.