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ICE mode efficiency

4771 Views 7 Replies 8 Participants Last post by  Head_Unit
Driving my 2017 for the first time on a long trip requiring gasoline I wondered if I wanted to get the most mpg out of my gasoline should I be in normal mode or hold. I realize hold is normally used to save battery for city driving later but if that is not a constraint which mode gives best use of gasoline at highway speeds and why?
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I'm sure others will chime in, but running the battery dry in normal versus forcing the ICE on in hold will not impact the mpg/efficiency of the ICE. There may be some benefit to using mountain mode if you anticipate seriously hilly terrain, but I'm betting any effects will be negligible.
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