The Tundra doesn’t have a mpg display, so I loaded up my trusty Torque for Android to monitor my instant and average MPG.

not my display...

According to Torque, my 4.7l v8 commuter pickup averaged 28.3mpg. About 8-10mpg (50%) better than my former ‘09 Santa Fe v6.

I haven’t done a pump measurement yet, but I think Torque is optimistic by a factor of 2.