"Higher than estimated annual mileage accumulation (such as more than 12,500 miles per year)"
It's not really the mileage, it is the number of charge cycles. Of course, miles driven and number of charge cycles are closely related. Number of L1/L2 charge cycles are, however, substantially less significant than the number of L3 charge cycles. There are a number of variables at work here, I've never seen anyplace where anyone has sorted out just how you relate charge cycles, temperature exposure, and periods at high or low state of charge in order to accurately predict battery life. And these relationships would be different for different battery chemistries so the water muddies even more.