I'm very happy with my 2017 TRD Sport 4 door automatic 6 cylinder at 90,000 miles. That includes 3 round trips from Asheville to Southern California. The bottom line for me is that I have confidence in making these long trips and plan to make more of them. Gas mileage ranges from 18 to just under 22 on the highway.
Lots of discussion here about dealers and service. I made the decision to have my dealer do all service as recommended. The only exception was to install Bilstein 5100 shocks to smooth out the ride. So far, so good. No complaints. Others are more skeptical about using their dealer service center.
I can outline a few common issues that are discussed in detail elsewhere on this site.
The truck is a bit underpowered. Changes were made, and the 2016 version is more powerful, I'm told. I took care of that issue by installing a device called ShiftSense Pro. They're online. It seems to make the truck stay in lower gear longer in order to maintain power. It's easy to install and better IMO than using the ECT button. Other options are discussed on the site too.
There is occasional axle wrap, a bumping sound, when you come to a stop. For me it was more noticeable early on in the morning as I stopped at the first traffic light. Over time, for me, it disappeared.
Look at the frame. Near the back wheels there should be a sticker with a "G" on it. There were some problems with rusting on older models and I think the "G" means the truck has the improved frame.
My only experience with Jeep was a 1978 "Golden Eagle." It had the decal of an angry chicken on the hood. It rusted out before my eyes. I have no rust issue with my Taco. The entire time I owned the Jeep nuts and bolts keep falling from the dashboard. I think one of the workers placed them there to fall out over time. Very annoying.
Finally, people complain about Tacomas painted white. Seems the color is prone to chip. Again, discussed at length here.
Good luck.