I posted a flavor of this comment on an article a few months ago, but it's relevant here:
I have a seven year old Volkswagen, not financed. I'm security conscious and made sure to disable all the data collection I could find in the companion app before removing my account, turn off remote access services, dig through the infotainment to turn off what I could, etc.
Last year I requested a Carfax on it, and one of the fields in the request was current mileage. I entered an estimate like 75000 miles. On form submission, that field failed validation with red subtext along the lines of 'this is less than the last reported mileage of 75345, reported <5 or so days prior>'. Checking my odometer and looking at my past few days' trips, that was indeed accurate.
The car hadn't been to a shop or out of my possession in weeks, so I can only assume the telemetry was still dialing home and selling to third parties despite my best efforts to disable it.
> turn off remote access services, dig through the infotainment to turn off what I could
This is never enough. You can't trust a software switch. You need to remove the hardware capability if you want to make sure the car isn't spying on you. In the best case, the telematics box has it's own fuse, and that may be enough. In other cases, you need to find the box and unplug it. The service manual will have it's location. In some cars it's easily accessible, in others less so and you need to remove the glove box or part of the dash. Dealers will probably refuse to do it, my advice would be to DIY or find an independent mechanic who will do it.
Your mileage went from VW->telematics vendor->broker->carfax, thats the chain it usually follows. The fuse stops it but the real issue is the owner is the only one without the record.
You could probably find some interesting info if you send out some privacy requests through the chain. LexisNexis and Verisk are consumer reporting agencies, so they have to provide you a disclosure on request. Start there.
This is why I pulled the fuse on the Data Communications Module (DCM) on my car. The device that transmits the telemetry simply doesn't get any juice.
Weird -- usually VW likes to falsify its data, so I am surprised this data was so accurate.
Every business likes data collection, until they don't.
I have been thinking of upgrading from my 2003 Corolla to an electric (not Tesla). The Corolla hasn't had a single repair problem in 23 years!
My main motivation to get a better car was, DD goes to a super prestigious college and it seems degrading to put their bumper sticker on a 23 year old car! But I guess I won't get another car. Serves you right mfr mfrs!
All it would need is a wi-fi antenna internally, and then it could connect to an open wi-fi network anywhere. And it's going to be pretty much impossible to avoid ever driving your car within range of some open network.
Lots of automotive OEMs want that specific kind of information for generic reasons (how many of what model made it to what mileage under what circumstances) that are entirely reasonable. Lots of them also want that info for warranty related reasons (you've hit the mileage limit and we won't do anything for you anymore). But, my state of Michigan is starting a program to evaluate replacing registration fees with mileage charges to account for the additional wear and tear on the roads from EVs that don't pay gas taxes to fund road repairs. This would require some kind of verification of mileage, which we can't currently do during emissions testing, since it doesn't exist here. Legally required data retention is becoming a bigger and bigger issue, particularly in light of the driver monitoring requirement starting in MY27 vehicles by the Bipartisan Infrastructure Act terms. That will presumably be integrated into any black box recording in a crash and probably subpoenaed in any dispute going forward.
In other news, I think I'll be taking a trip to somewhere down south to find a nice, used 1999 F350 dually with a manual transmission, since they're going to cease to exist shortly...
Try finding the fuse and pulling it. It will be in the manual.
Carfax also can report estimated mileage, but it might have a different flag in the system that allows override.
I've been handed a Carfax on my own car that has a reported mileage much greater than the actual mileage on the car, and the car has not been out of my possession.
Yet if you overestimated the mileage you would’ve been none the wiser!
Where was the car serviced? Antennas or not, the dealer might just plug in and upload everything during service.
What did you do, or what are you going to do? That would piss me off until i found the antenna and broke it
Couldn't you put some sort of faraday cage around the antenna?
The most horrible part this crime is I read somewhere That the amount the car companies get for spying on your locations is some pathetic paltry amount like $1-$5 one time. These car companies sell you out to insurance companies and such so they can collect data and use it AGAINST you. Ghouls everywhere now.
Random Public data:
Honda sold data on roughly 97,000 cars to Verisk for $25,920—amounting to about 26 cents per car.
Hyundai sold data on about 1.7 million vehicles for roughly $1 million—about 61 cents per car
"Resistance is futile." See also: LG TVs, etc.
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Tangential, but one of the concerns I have about these 'smart' cars is they have an expiration deadline.
There's an exceedingly common type of failure I have seen myself in industrial electronics and (has happened with Tesla at least once), that some module keeps a log of some kind in a nonvolatile flash, and this flash has a limited lifecycle, which the equipment reaches at some years into its life (or earlier, if the flash came from a bad batch, or more logging happens than planned).
At this point the board usually gets bricked and replacement is very hard due to cryptographic handshakes between components.