Some P85D owners are seeing great efficiency improvements with the firmware updates to versions .139 and .140. Some, including me, are not (or think we are not, but are not 100% certain.) The problem is we can't easily compare our own results with others' results we see posted here because there are just too many variables. The weather, the route, the wheels, the tires, etc. make comparisons of our individual numbers with anyone else's numbers somewhat meaningless. Our numbers would be meaningful in comparison to our own numbers if we could compare them to similar data recorded when we had earlier versions of the firmware installed, but for many of us we may not have recorded all the information we needed to in order for that data to be meaningful. There's nothing we can do to correct that now, since we don't have time machines.
All of us have the ability to start recording trips, and all the relevant data now, and all of us can plug this data into EV Trip Planner and get an idea of where we stand relative to EV Trip Planner. That is easy to do.
EV Trip Planner
If those of us who think we are not seeing the improvement in efficiency as well as those people who know they are seeing an improvement in efficiency would please post just some of their results here, along with what EV Trip Planner expected their results to be, we'll all be able to get a pretty good idea of where we fall on the efficiency improvement curve. And if some of us are outliers, on one end of the curve or the other, that might wind up being useful information to Tesla. Having the evidence here will definitely be a benefit to any of us who find that we just are not seeing an improvement in efficiency if we do wind up having to demonstrate that to Tesla at some point in the future.
When you post your information, please be as detailed as possible.
I'll start by posting information for two trips, both of which included about 30 minutes on the highway and roughly the same amount of time on rural roads that have varying speed limits and at times stop lights, etc. I tried to note the windspeed on the highway, using the tool from this thread:
http://www.teslamotorsclub.com/showthread.php/42027-Tool-to-estimate-the-head-wind-while-driving
I compare the actual P85D numbers with EV trip planner numbers, but I did not try to use their wind adjusted rated mileage number. I did try to estimate payload accurately in EV Trip Planner, accounting for the fact that I weigh more than my wife, had my 50 pound dog in the car with me, etc.
I have the Tesla 19” winter tires (Pirelli Sottozero IIs) on Cyclone wheels. (The Cyclone wheels are supposed to help a bit, as per the JB Straubel blog post.)
The mileage is off a bit, with the P85D believing it travelled slightly further than EV Trip Planner’s route. Some of that is definitely due to the length of my driveway and my wife having to drive around her parking garage to park, but that would not account for the entire discrepancy. I checked the route, and it is correct, so I don’t know what to make of that.
Both trips were made with range mode on, in sport mode, and with the battery at least somewhat preheated.
The results are that both trips did somewhat worse than EV trip planner would have expected. Both trips were into a head wind. Without the headwind, the results would have been closer to what EV Trip planner expected, but still worse than expected, but probably not much worse. I'm going to estimate that without the headwind these results would have been about 3-5% worse than EV Trip Planner estimated.
All of us have the ability to start recording trips, and all the relevant data now, and all of us can plug this data into EV Trip Planner and get an idea of where we stand relative to EV Trip Planner. That is easy to do.
EV Trip Planner
If those of us who think we are not seeing the improvement in efficiency as well as those people who know they are seeing an improvement in efficiency would please post just some of their results here, along with what EV Trip Planner expected their results to be, we'll all be able to get a pretty good idea of where we fall on the efficiency improvement curve. And if some of us are outliers, on one end of the curve or the other, that might wind up being useful information to Tesla. Having the evidence here will definitely be a benefit to any of us who find that we just are not seeing an improvement in efficiency if we do wind up having to demonstrate that to Tesla at some point in the future.
When you post your information, please be as detailed as possible.
I'll start by posting information for two trips, both of which included about 30 minutes on the highway and roughly the same amount of time on rural roads that have varying speed limits and at times stop lights, etc. I tried to note the windspeed on the highway, using the tool from this thread:
http://www.teslamotorsclub.com/showthread.php/42027-Tool-to-estimate-the-head-wind-while-driving
I compare the actual P85D numbers with EV trip planner numbers, but I did not try to use their wind adjusted rated mileage number. I did try to estimate payload accurately in EV Trip Planner, accounting for the fact that I weigh more than my wife, had my 50 pound dog in the car with me, etc.
I have the Tesla 19” winter tires (Pirelli Sottozero IIs) on Cyclone wheels. (The Cyclone wheels are supposed to help a bit, as per the JB Straubel blog post.)
The mileage is off a bit, with the P85D believing it travelled slightly further than EV Trip Planner’s route. Some of that is definitely due to the length of my driveway and my wife having to drive around her parking garage to park, but that would not account for the entire discrepancy. I checked the route, and it is correct, so I don’t know what to make of that.
Both trips were made with range mode on, in sport mode, and with the battery at least somewhat preheated.
The results are that both trips did somewhat worse than EV trip planner would have expected. Both trips were into a head wind. Without the headwind, the results would have been closer to what EV Trip planner expected, but still worse than expected, but probably not much worse. I'm going to estimate that without the headwind these results would have been about 3-5% worse than EV Trip Planner estimated.
Distance | RM | Total Energy | Avg Energy | Hwy Speed | Cabin Temp | Outdoor Temp | Wind | Elev Change | Conditions | EV Trip Planner Estimates: | Distance | RM | Total Energy | Avg Energy |
58.4 | 78 | 22.7 | 389 | 65-70 | 65 | 32 | 11HW | 630 | Cloudy | 57.2 | 69 | 20.8 | 364 | |
54 | 69 | 20.8 | 385 | 65-70 | 68 | 14 | 6 HW | (754) | Little light snow | 52.6 | 63 | 18.9 | 360 |
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