I bought my tundra used with 78,000 miles. It was like I was in a new truck, and was very pleased. Until I started having problems with the oxygen sensors going bad. I rated the reliability low because I think Toyota has dropped the ball with the experiences that I have had with the oxygen sensors.
How tight the truck still feels. My truck has over 122,000 miles on it now, and it feels like you are in a truck with about 30,000 miles.
Gas mileage, gas mileage, gas mileage. Need a lot of work there. I like head rests that adjust forward and back. The back seat is all right for children on long trips, but for adults forget it. After about 20 miles in the back seat all you want is out.