I think this is expected due to different efficiencies in driving just like an ICE car. Range can be affected by several factors like stop/go vs free flow traffic and hills vs flat terrain. I think the range estimate on the i4 is based on most recent driving.
If I’m going on a longer drive I plug in the route to myBMW app and/or in car navigation and it’s always been accurate within a few percent since it knows what kind of driving to expect.
After awhile I got a feel for how much range to expect around town vs longer trips just like I have with my ICE vehicles. Had the i4 for almost a year now and love it.
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