I have a new 2018 and have been averaging 19mpg overall, driving in a moderate fashion.
Also, am new to the forum, but can't start a new thread yet. So at the risk of veering off-topic a bit, a related question on throttle response/drivability (which I've not been able to find anywhere on this forum).
One annoying thing I've noticed is that when the engine RPMs fall to 1,000 (on trailing/off-throttle), the engine bumps up to 1,500 RPM by itself, without me touching the throttle! Dealer says "no, its just down shifting". I call BS because it also happens when in manual mode - and in any gear. Worse, you can get into a "rinse and repeat" cycle when using the cruise control at moderate speeds. I think it might be an emissions thing, but not the kind of refinement I expect from Toyota.
Sound familiar? Thanks!