Just bought 2005 Toyota Prius.... on board diagnostic shows 12 v battery @ 12.6volts & ; Hybrid @ 14.3volts @ stop & ; pretty constant 14.0 volts when driven... Why would gas mileage only get 41 mpg highway ????? any reasons ??
What makes this problem better or worse?
nothing
How long has your 2005 Toyota Prius had this problem?
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Where are you driving? What conditions? What accessories are being used? So many variables here that you can't really know what is going on. How are you measuring economy, also?