2004 Prius Bought: 3/1/04, currently has 28k miles. Location: Seattle Normal use: 50 mile round trip commute, freeway at 60-64 mph Here's a chart of my lifetime MPG performance (calculated, not by the display). The red is per tank mileage, so it jumps around depending on how good I was at filling the tank. The blue is a rolling 4 tank average that tends to smooth out those deviations and shows the true running MPG. It's interesting to note the seasonal variation (I live in Seattle). The whoop-de-doo in late December 2005 is from the ECM recall. The next tank sucked. I keep thinking that the mileage is dropping with age, but this shows it's probably just the weather. We'll see what it does this summer. [attachmentid=2030]
