24-25 mpg on my 450H with 8000 miles

 

On trip from Boulder City NV, to Flagstaff AZ, got about 20-21 due to high speed, and uphill. From Flag to BoulderCty (7000 ft alt to 1500 ft) and holding speedlimit due to over 16 radar units deployed along the highways, averaged 26+, but at one point going down I-40 (essentially downhill from Flag) got 28.3

AWD 350Rx, 2 adults, 2 kids, and luggage. Not bad for a nonhybrid SUV. Around town mixed driving avg 19-20.

 

24-25 urban area very little city but no interstate. RX350 FWD regular 100% gas no ethanol.