I think you are accelerating too hard from a stop or coming up to a stop too fast.Bought new 2020 Rav4 hybrid limited beginning of December and travel mostly highway 68-70 mph. 90 miles per day. My mpg's have only been 30 - 32. I fill up at same gas pump and calculate milage myself. I tried even keeping it in EV mode around town as much as possible babying throttle. Toyota said take it into service center. Dealer said could not find anything. Maybe an update coming. Anybody else having this problem. Will be bringing back at 5k service. I have tried different gas station still same.