Short trips really aren't good for Prius economy, especially in the cold. You could probably run a 80-90% grille block in the winter on those short trips and half a grille block in the summer (depending on where in CA you are; would want to monitor those coolant temps if you do any significant blocking).
Low 40s for 15-minute drives in the winter/spring isn't bad. The average '08 Prius gets 42.9 MPG according to Fuelly.
__________________
2013 Toyota Prius C 2 (my car)
2015 Mazda 3 iTouring Hatchback w/ Tech Package (wife's car)
|