One the primary determinants of Prius performance is the model year. Here is a table of the 2008 versus the 2010:
30-35 2 1.6% 0 0.0% 35-40 7 5.6% 7 4.7% 40-45 35 28.0% 15 10.0% 45-50 41 32.8% 56 37.3% 50-55 32 25.6% 42 28.0% 55-60 7 5.6% 26 17.3% 60-65 1 0.8% 3 2.0% 65-70 0 0.0% 0 0.0% 70-75 0 0.0% 1 0.7%Obviously, the mileage has significantly improved, Driving style is important but it is obviously harder to get lower mileage with the ZVW30 compared to the NHW20.
Bob Wilson