Brooke Posted September 25, 2006 Share Posted September 25, 2006 I like driving my new IS 350 with the power button on, but it seems to burn more gas. Does anyone know the delta mpg when using the power ect as opposed to not using it? When I first bought the IS my salesman said to drive with the power button on for the first two weeks. Anyone know why? Thanks Quote Link to comment Share on other sites More sharing options...
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