12-04-2005, 04:44 AM
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Automania Enthusiast
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Location: Upstate NY
Hybrids: 05 Prius, 06 Highlander Limited AWD
Posts: 163
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Fuel Mileage Results and Grades of Fuel
Well seeing both the Highlander Hybrid and RX400H state in their manuals that better performance is achived by using Premium fuel  it made me wonder if the EPA MPG test was done using Premium fuel Vs Regular, which most of us are using. Because there seems to be such a big difference in what we all are showing in the real world Vs the EPA test something doesn't add up. I know the EPA test are NOT real world, but I normally get pretty close to what they state in all my other cars & trucks, why not the HH.
Has anyone on the board tried the different grades of gas and done a comparision on MPG difference's when using higher octane fuel grades?
2005 Prius - White, Gray Interior, Option Package 6, Mud Flaps & Auto Door locks from Coastal
2006 Highlander Hybrid - Limited, White, Tan Interior, Nav, 4WD, Trailer Hitch
NOTE: On both the Prius and HH batteries are included with your purchase ! 
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