I just added my new TCH
I filled up at half a tank. It took 7.85 gallons and went 327 miles. The dealer gave me a full tank, and I'm not sure if they tried to top it off or not. The average mpg readout was 40.7 mpg - I calculated 41.6. The next fill up be a better indicator.
I've been very amazed that I can consistantly exceed the EPA 38 mpg on my commute (33 miles, all but 4 on the freeway) Quite an amazing feat considering the size and weight of the TCH! I pretty much drive the limit (65mph) and try to make the last mile home on EV only. Most times I can, despite it being a slight uphill and 35mph. I think a year of driving my FEH has helped train me to drive for better mileage!
I did increase the tire pressures to 42/40 psi after reading about it here. I don't really notice any difference in ride or road noise.