I've been puzzling over a sudden unexplained loss of 3 miles of rated range. I'm not talking about 'Decreasing rated range' as I am very familiar with that thread - this is something different. In over 2 years of ownership, I have never seen this behavior before. While 3 miles alone is not that big of a deal, I'm concerned should this happen again in the future. Also, it compounds the gradual decreasing range I have observed in a little over 24 months of ownership. Over the past few months, my car has repeatedly achieved 200 miles at 80% and 225 at 90% - until I went on a trip last week. On that trip, my car appeared to charge normally (see below), but since coming back, both my 80 and 90% charge numbers have consistently been 3 miles lower. I am very surprised at the rapid loss of range - usually it takes several months to a year to see a loss of 3 miles. In my case, it essentially happened over 1 weekend. This is not normal. Fortunately, I track data from the API and store it on my home server. I pulled the logs and am showing an excerpt below: 10/22 (80%) - 200.42 10/23 (50%) - 200.79 10/24 (90%) - 225.01 ---Begin trip--- 10/24 (90%, SpC) - 225.39 10/26 (90%, SpC) - 225.0 ---After trip--- 10/27 (80%) - 197.78 Note: 3 miles lower 10/31 (80%) - 197.11 11/1 (90%) - 221.70 Note: Tried to restore range by doing 90% charge. Still 3 miles lower. 11/2 (90%) - 222.20 11/3 (90%) - 222.04 Thus, it seems that both my 80 and 90% charges are 3 rated miles lower than they were just a few days earlier. Anyone care to explain how that could be? Anyone seen this behavior before?