I've recently purchased a second high mileage (136k) 2013 Volt and I noticed a significant range difference between that one and the one I already owned (2013 90k). The range estimate when full on the original one is 44 miles and the higher mileage one is 36. I can make my work commute on the higher range one with distance to spare. The commute is 37.6 miles and I usually have 4 or 5 miles left. On the higher mileage one, I end up running short by a couple miles and use about 2 to 3 miles of the ICE. I was hoping that the new one I purchased just needed some time to get used to the new driving style for the range estimate to creep up but now I'm wondering if there's a battery or some other issue.
I know on the higher mileage one, the lifetime EV miles are about 40k according to Voltstats (39.3 MPGe). I don't know what the lifetime EV miles were on the lower mileage one but I do know the lifetime MPG was roughly 70 when bought so I don't think there's a significant usage difference in the batteries. Both Volts have the front air dam removed and both have non OEM tires. The higher mileage one does have some long lifetime tires with slightly more tread but I wouldn't think that it would cause that drastic of a difference. Is there any test I can do with SPS to confirm the batteries are similar? The one strange thing I found when logging the EV data is that the lower mileage Volt typically uses about 9.2 Kwh during the 37.6 mi commute and the higher one uses 10.1 for the 36 miles it's in EV mode. Does that indicate some loss somewhere?
I know on the higher mileage one, the lifetime EV miles are about 40k according to Voltstats (39.3 MPGe). I don't know what the lifetime EV miles were on the lower mileage one but I do know the lifetime MPG was roughly 70 when bought so I don't think there's a significant usage difference in the batteries. Both Volts have the front air dam removed and both have non OEM tires. The higher mileage one does have some long lifetime tires with slightly more tread but I wouldn't think that it would cause that drastic of a difference. Is there any test I can do with SPS to confirm the batteries are similar? The one strange thing I found when logging the EV data is that the lower mileage Volt typically uses about 9.2 Kwh during the 37.6 mi commute and the higher one uses 10.1 for the 36 miles it's in EV mode. Does that indicate some loss somewhere?