I drive long distances will I benefit from converting my Prius to PHEV?
The benefits will be less dramatic but still significant when driving longer distances at highway speeds after a charge. Your average mileage will be above 100 mpg until the charge is depleted and you have driven about 30 miles – then your mileage will return to non-PHEV mileage of about 50 mpg over about the next 30 miles.
