Yes, it's close enough. I only have range data available starting from November 2011, when the car was about five months old. I'm fairly confident about the 10% range loss figure relative to that performance. Note that this implies 21 kWh usable in early November 2011, as measured in my
first 100-mile run. The car was still showing 281 Gids in April 2012, although it was exhibiting about 5% range loss at the time.
My long-term energy economy is about 4.5 m/kWh. I can't be really sure, because CarWings remained inaccurate until the very end, and I reset my onboard gauges frequently. The car was parked outside at home, usually in partial shade. Covered parking at work. South Bay is much warmer than San Francisco, but I tried to avoid six temperature bars. This was difficult to do on hot summer days, but I usually wouldn't hit that until noon, or not at all, if I parked the car in the parking garage at work all day.
I had between 15 to 20 turtle events due to the work I did on the
reverse SOC table, and other tests. I followed Tony's lead in this case, and this could have caused slightly larger than anticipated capacity loss. Would extra 1-2% loss would be fair? I babied the battery otherwise, and maintained a low state of charge when I didn't need to go anywhere.