I upgraded from a Toyota Tacoma 4.0 V6 to the Tundra 4.6 V8. I got the 4.6 Liter because it was closer to the V6 as far as gas mileage and I wouldn't be sacrificing a lot. The 4.6 L is rated for 15 mpg around town and I am averaging 17 mpg around town. I had to retrain myself how to accelerate and be aware of how I'm driving, but it has made all the difference! Value for dollar, I would pass on the Tacoma any day and go for the Tundra.
The interior features have doubled from having my Tacoma. I love the steering wheel controls, blue tooth, manual adjustable headlights, and all the storage options.
I would like to have turn arrows on the mirrors and auto folding mirrors to be standard equipment with the SR5 package, rather than the Limited.