The Hidden Risks of Car Data Sharing: What Drivers Need to Know
Modern cars are wonderfully helpful right up until you realize how much digital housekeeping comes with them. Navigation remembers where you go, your phone syncs contacts, apps can unlock the doors, and connected services may track driving behavior in the background while you are simply trying to get to work.
That does not mean connected cars are bad news. Many features are genuinely useful, especially for navigation, emergency assistance, maintenance alerts, and convenience. The smarter move is to treat your car more like a phone on wheels: enjoy the useful features, but know what information you are handing over and where it may travel next.
Your Car May Be Collecting More Than Mileage
Connected vehicles can collect precise location, driving behavior, infotainment activity, biometric information, camera data, and other personal details, according to the Federal Trade Commission. The California Privacy Protection Agency has similarly described modern vehicles as connected computers capable of gathering information through apps, sensors, cameras, location services, and smartphone integration.
That matters because these data points can reveal surprisingly personal patterns: where you sleep, where you work, which medical offices you visit, how often you drive at night, and how aggressively you brake. None of those details feels especially dramatic in isolation, but together they can create a remarkably specific picture of your daily life.
In January 2026, the FTC finalized an order against General Motors and OnStar after alleging that precise location and driving-behavior information from millions of vehicles had been collected and sold without adequate informed consent. The order requires greater transparency and gives affected consumers stronger controls over certain data collection and sharing.
The First Hidden Risk: “Helpful” Features Can Have Second Lives
Drivers usually agree to connected services because they want something concrete—navigation, crash assistance, maintenance reports, roadside help, or a driving-score feature. The privacy risk appears when information gathered for one purpose is later used somewhere you did not expect.
In the GM case, the FTC alleged that information including speeding, hard braking, late-night driving, and precise location was provided to consumer reporting agencies and could then influence insurance decisions. That is a useful lesson beyond one automaker: when you activate a connected service, ask not only what does this feature do for me? but also who else gets the data it creates?
A good privacy review is surprisingly simple:
- Open your automaker app and look for privacy or data settings.
- Check for driver-behavior or “smart driving” programs you do not use.
- Look for options to limit sale, sharing, or personalized analytics.
- Confirm which location settings are necessary for the features you actually want.
- Revisit the settings after major app or vehicle software updates.
Your Driving Data Could Become a Financial Issue
Most drivers think about privacy as an advertising problem. Car data raises a more practical possibility: information about driving behavior could affect decisions involving insurance or other consumer services.
That does not mean every automaker shares driving data with insurers, nor does it mean every connected feature will change your rates. But the FTC's enforcement action shows that data gathered by a vehicle can move through an ecosystem involving automakers, service providers, data companies, and consumer reporting agencies.
My rule here is simple: never enroll in a driving-monitoring program solely because the dashboard says it is “helpful.” Read what gets measured, who receives it, how long it is retained, and what you receive in exchange. A discount or useful coaching feature may still be worth it, but make that choice knowingly.
Your Phone Can Quietly Give the Car Another Layer of Personal Data
Pairing a phone can copy or expose information such as contacts, call histories, messages, navigation destinations, and app access depending on the vehicle and permissions you approve. The FTC specifically warns that connected rental cars may retain personal information after the renter leaves if the system is not cleared.
The clever fix is to use minimum necessary permission. If you only need Bluetooth audio, the car probably does not need your entire address book; if you are renting, charging through a standard power adapter instead of a data-capable USB connection may also reduce unnecessary syncing.
This is one of those tiny habits that feels fussy once and effortless forever. When a pairing screen asks for contacts, messages, or other permissions, do not automatically hit “Allow All” because you want the setup screen to disappear.
Location Data Deserves Its Own Privacy Setting
Precise location can be especially sensitive because repeated trips may reveal routines rather than merely destinations. The FTC specifically describes geolocation as sensitive information and notes that connected-car location data can reveal intimate details of a person's life.
If your vehicle or manufacturer app gives you separate controls for location history, trip tracking, vehicle finding, or driving analytics, review them individually. You may decide that remote vehicle location is worth keeping while continuous trip logging is not; privacy does not have to be all-or-nothing.
A particularly smart move is to check saved destinations, too. “Home,” “Work,” recent routes, and favorite addresses can be useful, but they also become information you should remove before someone else takes possession of the vehicle.
Selling or Trading the Car Requires a Digital Cleanout
Most of us know to empty the glove box before selling a car. Fewer people remember that the infotainment system may still contain contacts, app logins, destinations, call records, garage-door codes, paired devices, and connected-service accounts.
The FTC recommends clearing stored information, removing connections between the car and your devices, and canceling or transferring subscriptions before selling or donating a vehicle. Consumer Reports also recommends removing data from associated apps and cloud accounts rather than assuming a factory reset inside the car wipes everything connected to the vehicle.
Think of the handoff as a two-sided reset: clean the car and clean your account relationship with the car. Unpair phones, erase navigation history, factory-reset the infotainment system if appropriate, remove the vehicle from manufacturer apps, cancel connectivity plans, and confirm that remote access no longer works.
Renting a Connected Car Deserves a Different Strategy
Rental cars are temporary computers used by a long chain of strangers. If you pair your phone and leave without deleting the connection, the next person may be able to see information you assumed disappeared with you.
The FTC advises renters to limit permissions, delete paired devices before returning the vehicle, and avoid unnecessary data transfer simply for charging. If you only need directions, using your phone independently in a secure mount may sometimes be simpler than fully integrating your digital life with a vehicle you will return tomorrow morning.
Privacy Settings Are Becoming Part of Car Ownership
Consumer privacy laws are evolving, and some automakers now offer ways to request access, deletion, or limits on certain uses of personal data. What rights you have can depend on where you live, the manufacturer, and applicable law, so the options are not identical for every driver.
That is why I would add one new task to the usual oil-change-and-tire-pressure mindset: review your car's privacy settings once or twice a year. Connected-car features can change through software updates, new subscriptions, or revised terms even if you have owned the same vehicle for years.
Pit Stop!
Pair with purpose. Give the car access only to the contacts, messages, location, or apps you actually need.
Audit “driver score” features. If you do not use a driving-behavior program, check whether it can be disabled rather than leaving it running by default.
Treat a rental like a borrowed laptop. Remove your phone, destinations, and account data before handing back the keys.
Do a digital trade-in checklist. Factory-reset the car, unlink the manufacturer app, remove subscriptions, and test that remote controls no longer reach the vehicle.
Read privacy settings after updates. New software may add services or controls, so yesterday's choices should not automatically become permanent ones.
Keep the Convenience, Lose the Oversharing
Connected cars can make driving easier, safer, and more convenient. The privacy problem is not that your vehicle contains technology; it is that drivers may not always see how much information flows behind the touchscreen or what happens to it after a feature has done its job.
The best response is not to disconnect everything and return to paper maps. It is to become a more deliberate connected-car owner: approve fewer unnecessary permissions, review driving-data programs, protect location history, and erase digital traces when a car leaves your hands.
Your vehicle may know a surprising amount about your life. You should have an equally good understanding of what it knows—and a say in who else gets to know it.
