First 1800 Miles at ~49mpg
I picked up my new Prius on a Tuesday, (05 Salsa Red Pkg 6) and by Sunday we had 1780 miles. Mix of interstate at 65 and then highways at 45-55 MPH, depending on road construction, through the Cascade Range in Oregon and then through the Eastern Oregon land of nothing. Lots of up and down, a bit of steep climbing, descents..lots of fun. Even some gravel roads in Idaho (oh the poor little car). We averaged high 40's (48-49) for each tank, even driving at 75 mph on the Idaho roads after we hit 1000 miles on the odometer. We have the tire pressure at 42/40, and have been trying to drive smartly. Once we hit the Columbia river gorge in Oregon on the way back, we were bucking a head wind and the average dropped a bit, and we were blowing all over the road which was a bit disconcerting, but so was everyone else.
Totally comfortable, loved the NAV onced we used the override, and enjoyed the quiet ride! Great gas mileage..! It was great fun to drive 200 miles to the *Conservative* town of Roseburg, get gas and to have a full tank after 4 gallons.