I just accelerate slowly, P&G routinely, speed limit. Nothing out of the ordinary. In fact, the current tank I have going right now is 59.7 mpg. I have had the car since March, so I've had a little practice watching the MFD and being aware of where the power is going. On my first tank I averaged around 50, so I think there is definitely a learning curve. Let me know if that helps.
I Just Bought The 08 Model Prius, In The Lt Green Pine Mica Something Or Other. Looks Like You Did Too. One Week Old, 500 Miles And Getting 49.8 On This First Tank. Wondering How You Get 53.7. Anything Special? Bobbienstu