How can this be....?

[St☰v☰]

My Model 3 is my daily driver. My round trip to/from work is about 61/62 miles, give or take a few tenths, and I'm overly anal and actually record several statistics on my car on a daily basis, i.e. miles in the am when I leave, miles when I arrive at work, kw's, and the same in the evening, except in the evening I also record total (speedo) miles. I've done this since the car was delivered to my home. Yeah, I know, but I figured this may give me good and bad trend data and serve as an alert should any of the values stray wildly from the norm, like yesterday and today.

Last Thursday my miles ended at 4,895 and on Friday my miles ended at 4,956 for a daily total of 61 miles. On Monday I recorded total miles of 5,022, for a total miles driven for the day of 66 miles (I drove to lunch). On Tuesday it ended at 5,084, for a daily total of 62 miles. Wednesday my total miles were 5,129 for a daily total of ... 45 miles . Tonight when I arrived at home my miles were 5,182, for a daily total of 53 miles , I also drove to lunch today. Now, nothing changed, I still drove to/from work both days and both days should have totaled 61 to 62 miles, except for the added miles today for a lunch trip, but it didn't and I don't understand why.

How do our Teslas record total miles driven?

 

[tvad]

Damn, that’s like a “Black Mirror” episode.

 

[ttdanimal]

It's because the doctor is a female.

 

[AlanSubie4Life]

It's because the doctor is a female.

Ha; it is just like one of those brain teasers. Can’t wait until the OP tells us the answer; I give up.

 

[CrayZ1]

3 series BMW drivers see that also. It has to do with how many hundreds of lane changes they do while driving on a freeway. A Z-shaped course is much longer.

 

[Dr. J]

Tesseract.

 

[insaneoctane]

Unless you've discovered an (illegal) bug, it's likely due to the most common cause of unintended acceleration...

 

[St☰v☰]

Unless you've discovered an (illegal) bug, it's likely due to the most common cause of unintended acceleration...

Really? Maybe if I were sitting on ice spinning my wheels it might result in MORE miles, not LESS. but your post did give me a nice chortle..

 

[vkana]

Was the weather relatively same all days? The earth expands / contracts based on temperature

 

[Arif]

Simple physics.... Shortest distance between two points is a straight line! Autopilot got tired of you taking the long route

 

[woof]

How do our Teslas record total miles driven?

Poorly...apparently.

Some questions that may shed some light:

Are you using odometer or trip meter to track reported miles? (might make a difference)
Is the Wh used consistent with the real miles or the reported miles?
Is the Wh/mi consistent with the real miles or the reported miles?

And stop going out to lunch, it's adding noise to the data!

 

[bedoig]

I would have said human error too, but the fact that you have a bunch of extra days on the back end where the numbers work makes it unlikely that you just fat fingered a day. Curious, but I do still think it's less likely that an odometer is wrong. Who knows though, keep tracking. And spend $50 for a year of TeslaFi.

 

[tvad]

Verify using Apple Maps, or Google Maps for all your trips. Add the mileage. Compare to Tesla’s odometer.

 

[DrtyJrze]

You forgot to deduct all the miles from when you were backing up in reverse.

Everyone knows when a car drives in reverse it takes miles off the odometer.

 

[Az_Rael]

Unless you've discovered an (illegal) bug

Given Tesla’s software QC record, I would not be entirely shocked if it did turn out to be a bug. Lord, that would be a heckuva fiasco trying to rectify that.

Sometimes sensors fail, though, so it could be that too.

Yeah, I know, but I figured this may give me good and bad trend data and serve as an alert should any of the values stray wildly from the norm, like yesterday and today.

Maybe set up a test with known distances like a highway with mile markers.

 

[SD_Engnr]

This is not the first time I've heard of this happening. I've had something similar happen, and have even seen my total miles on the ODO change overnight.

 

[Evoforce]

OP, Just make sure that your dad's car doesn't fall off the jack stands while you are trying to reverse the miles off the car..

Hmmm... no personal experience, I saw it in a move once when I was skipping school..

 

[AlanSubie4Life]

Really? Maybe if I were sitting on ice spinning my wheels it might result in MORE miles, not LESS. but your post did give me a nice chortle..

Pictures (of your odometer etc) or it is not happening...

 

[AltLogic]

I was going to guess you started working at a different location or you have a different home now.

 

[St☰v☰]

Pictures (of your odometer etc) or it is not happening...

I use Excel, not pictures, but I will take a screenshot tomorrow when I get home, just for you