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Probably worth knowing the fuel economy for the ELR, at least mine can vary a lot. Hills (mountains) or use of mountain mode challenge 30 mpg. For instance today I made run up the mountain from town and with mountain mode engaged it used .75 gall in 15 miles. Note this was 70 mph and climbing a grade the whole way, 3 or so miles being a 6% grade.

I fill my tank so infrequently I don't remember what it reads for mIles with a full tank, but right now per the Onstar app with 60% or 5.5 gall remaining my estimated fuel range is 181 miles.

Your mileage may vary :cool:

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