I believe there is pretty solid evidence that the P85Ds and perhaps the S85Ds as well are consistently overstating the distance they travel. In other words, their odometers are not accurate. I first noticed this in the excellent side by side efficiency testing that wk057 did. Driving together, parking together, etc., his P85D recorded a greater distance traveled than his fiance's P85 did: 112.2 miles vs. 111.3 miles. P85D vs. P85 Efficiency Testing - Page 6 I have been recording trips myself, for comparison with EV Trip Planner, and the several different trips I record all result in our P85D claiming a greater distance traveled than EV Trip Planner believes the route should be. Some portion of this is due to the length of our driveway, and my wife having to drive around to park in the parking garage she uses, but not all of the discrepancy can be accounted for this way. Also some of the trips do not involve the parking garage. Some of these trips, which show the discrepancies, are posted here: P85D vs. P85 Efficiency Testing, Take 2 - Page 17 We've also checked a couple of these (my wife's trip to and from work) against another car (when she doesn't take the Tesla to work) and the other car's mileage figures come out much closer to EV Trip Planner's figures. In addition to my own trips, I've started noticing that when others post EV Trip Planner comparison data, almost without exception, the mileage their P85D or S85D claims they traveled is greater than the distance EV Trip Planner believes the route was. Below are just a few of those posts: Real World Comparison of a S85 to an 85D Efficiency - Page 6 Comparing P85D Torque Sleep efficiency (versions .139 and .140) to EV Trip Planner - Page 2 P85D vs. P85 Efficiency Testing, Take 2 - Page 18 Below is a summary of the data from the three posts above: P85D or S85D EV Trip PlannerRecorded Mileage Expected Mileage 53.5 52.854 51.7241 239100 99.7156.3 154.186.6 85.568.4 68.4149.3 146If some of you would like to add some data to this thread that supports or refutes this, I think that would be helpful. If it turns out that we collect more data to support my theory that the P85Ds and the S85Ds are overstating the distance they travel, I'll write to Tesla and direct them to this thread. Thanks.