Quote:
Originally Posted by mpg_numbers_guy
I've never witnessed any efficiency degradation in any ICE vehicle besides from general maintenance like spark plugs and the like, regardless of age or mileage.
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I can't say I have either, then again I've never purchased new.
From what I can tell in my volt, overall it may have lost some range feom new but since I have owned it and 50k miles now I have had no change in the battery. Used 9.8 kwh today and supposedly had 10kwh useable capacity when new.