after 12'000km I can certify the computer consumption indicates 0.5l (0.132Gallon) under true.

I have systematically fullfilled the tank (included security) up to vision level and reset the A Km counter.
So if the consumption indicate 10.4 l/100km it is really 10.9l !
The dealer told me that Toyota was never good that way.
I can tell you that any Audi VW indicates 10.4 if it is 10.4!

Also, at max speed 215 KMh (133MPH) (no cruise) during one hour,
consumprion was 21 l/100km (around 11MPG for US)
at Steady 180 Km/h (112MPH) (during two hours with cruise control) consumption was 17.4 l/100 (14MPG).
As it is indicated on different official web site this marvellous battery system do not operate over 115km/h (71mph)
I also note that the NAV GPS do note indicate the GPS speed,so cannot compare true speed

At max speed batteries are very low and I susppect this engine not to cutt them but loosing energy to charging-uncharging permanently.

I also note that the average consumption on the NAV self-reset to 0 km after 5'000km and restart but kept the same consumption value !