So, I've been seeing some odd inconsistencies on the trip computer, and have been paying extra attention to it. In at least one thread it was calculated that the Wh/mi to achieve rated mileage is somewhere around 304. Sometimes that seems to be pretty close, and other times it seems that I need closer to 285 to get rated mileage. This brings me to my first question, which is: What is included in the calculation for the Wh/mi on the trip computer? This is also the same question: What is included in the calculation/measurements for kW/h used in the trip computer? (Since the answer to the Wh/mi is really a calculation of the kW/h divided by miles, and I'm not questioning the calculation of the miles (for now)). For example, perhaps the calculation of kW/h used is only based on drivetrain usage and not accessories? That might explain differences I've seen. Or does it measure directly from the battery? Has anyone left their car unplugged for a while and noted that the kW/h in the trip computer (since plug-out) has gone down? I keep meaning to do that. Today I was monitoring the energy meter (on the center display), which was set to 30 miles. I watched my trip computer and waited until it was at exactly 30 miles. There was a 10+ Wh/mi difference between the projected (based on average) on the energy meter and on the trip computer (283 vs 295). Why would these be different? I noted it between 29 and 31 miles and the difference was there the whole time. For completeness, I ask the specific question: What is included in the calculation for average Wh/mi on the energy meter?