3000 miles on my 2018 now
I really like my 2019 Titan XD. It has 3000 miles on it now and is the nicest pickup that I've owned in 35 years of owning pickups. It's a shame that Nissan doesn't advertise them. You don't see many on the road. Mine is a crew cab SV. I did buy leather seats from Leatherseats.com out of Oklahoma City, and had a local auto upholstery place install them. All told that cost $1,600. The leather quality looks like better quality than what I see in OEM leather seats.
The only negative experience I've had was of my own doing. I had cut down several trees in my yard, and the house next door to me which I also own. On a Saturday afternoon my wife and I were loading up limbs, I still had room in my bed to get limbs from the back yard of the next door house. I had previously cut down a tree there but left about 4 feet of stump. After we finished loading I was backing up, not paying close enough attention to what I was doing, and crunched the tailgate. One body shop gave me a repair cost of $2,501.30. Another body shop that I ordinarily use for minor repairs suggested that a new tailgate would be preferable since it was a new pickup, but he also said he would look around for alternatives. I got lucky and after searching the internet for 3 or 4 hours I found a 2017 Titan XD diesel in South Carolina that had an engine fire that was the same black as mine on Craigslist. It was $850 delivered, and only needed to have my camera taken out and installed in the replacement. My repair cost was $955.