48,000 miles on my 2015 with about 20,000 towing a 10K fiver. Only standard maintenance at this point and still on the original Michelin AT tires, but recently installed winter tires/wheels as the OEMs are 2/3 worn. I did replace the CAC cold pipe at 42K for insurance.

 

My work truck is a 2016 6.7 cab and chassis flatbed. Drove it for 7 months this summer. Turned it in for winter break last month with 110k on it. I can put on over 5k miles a week in the middle of road construction season. Lots of towing, lots of idling, lots of wear and tear. The sync system was finicky all season. Disconnecting the batteries seemed to always make it work again though. And the cooling system is losing coolant somewhere at a pretty steady rate. No leak though.

 

2012 6.7 PSD, 135k miles, replaced: Shocks, 1 set of batteries, 1 brake job, 2 EGT sensors, 1 Nox Sensor, a few light bulbs.


Best truck to date

 

76K on mine. Replaced the cold side turbo line just to be safe while towing. Brakes at 60k. Batteries around the same time. Changed the fuel filter a couple days ago, which I have done several times, and didn't tighten it all the way when I finished and got the low fuel pressure warning soon afterwards. Got back under, tightened it up, correctly, and all good.