My own experience was different: I was getting 89% of EPA range after 175K miles. I wonder if they are doing an apples to apples comparison: comparing EPA miles with EPA miles or are they talking about real miles? Actual mileage varies a lot depending upon driving conditions e.g., doing 75 mph with AC at full blast will dramatically reduce mileage. I think that the real issue is the EPA methodology. My wife has a Hyundai Kona EV, it has the same issue that real life mileage is worse than EPA mileage.