Quote:
Originally posted by km406:
Is it better for gas mileage to use the cruise control or not?
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It all depends on your driving habits. The cruise control will generally want to down shift a lot in order to maintain the speed that you have set (that’s of course its job in life). This is especially true if you're driving on a hilly road. If you're looking for MPG over constant speed, then you're better off by controlling the accelerator yourself and letting your speed drop down on inclines (and therefore not down shifting as much as the cruise control would otherwise do). If you have a heavy foot on the highway (never letting your speed drop below the speed limit and downshifting a lot), then your MPG could actually be better with the cruise on.