At 75 mph you will never get 30mpg. Should be around 25. Around 55mph you can expect 35mpg on highway.
In cities, in summer you can expect 32 mpg.
I am at 1700 miles, and am getting these figures.
Dont buy this car if you are looking at linger drives only. But if you want city mileage 80 % of time, you can buy this. Its more silent than any of the Toyota suvs.