Renting a car is a convenient and often enjoyable part of travel, whether for a family vacation or a business trip.
However, a leading car rental expert is cautioning drivers about a seemingly harmless action that could put their personal information at risk.
Harry Anapliotis, CEO of Rental Center Crete, a top car hire company in Greece, says that while renting a vehicle is generally straightforward, there’s one mistake renters should never make.
“You can typically do everything with your rental car that you would with your own,” Anapliotis explains.
“But there’s one thing you should avoid—a mistake most people make—that can have serious consequences.”
The Hidden Risk in Modern Cars
The culprit? Connecting your smartphone to the rental car’s infotainment system. Modern vehicles, often described as “computers on wheels,” rely on advanced technology that enhances convenience but introduces new vulnerabilities. “Your smartphone holds sensitive data—contacts, call logs, messages, and media files,” Anapliotis notes. “When you sync it with the car, that data is often stored in the vehicle’s system.”
Unlike what many assume, this information doesn’t automatically disappear when you disconnect your phone. “The car’s infotainment system retains it until manually deleted,” Anapliotis warns. “Rental companies rarely clear this data between customers, meaning your personal details could be accessed by the next renter, employees, or even hackers.”
This privacy risk is largely overlooked. Consumers often believe their data is secure or erased after use, but without deliberate action, it lingers—potentially exposing them to identity theft or other security breaches.
The Simple Mistake to Avoid
“Most people forget to delete their data profiles from the car before returning it,” Anapliotis says. “That oversight can lead to serious privacy issues down the line.” From contact lists to navigation history, the information left behind could fall into the wrong hands.
How to Protect Yourself
Anapliotis offers practical advice to avoid this pitfall. “Unless you absolutely need internet access in the car, skip syncing your phone entirely,” he suggests. Alternatives like USB converters, audio cables, speakerphones, or hands-free headsets can handle calls and entertainment without compromising security. For navigation, he recommends sticking to your smartphone rather than the car’s built-in system.
If syncing is unavoidable, Anapliotis provides a step-by-step guide to erase your data before returning the vehicle:
- Disconnect Your Phone: Go to the car’s Bluetooth or Wi-Fi settings, find your device in the paired list, and select “Unpair,” “Delete,” or “Remove.”
- Clear Navigation History: Access the navigation settings and delete your location history.
- Perform a Factory Reset: Navigate to the infotainment system settings, look for options like “Factory Reset” or “Clear Personal Data,” and confirm the action.
- Check for Residual Data: Remove cached data, call logs, texts, or contacts stored in the system.
A Growing Concern
Anapliotis emphasizes the broader implications of this issue. “Syncing your phone with a rental car can expose contacts, messages, passwords, GPS data—even medical or financial details,” he says. “As cars become more connected, they’re under increasing scrutiny for data privacy, and rightly so. This concern has even caught the attention of governments.”
The good news? By following these simple steps, renters can virtually eliminate the risks. “Being data security aware lets you enjoy your rental car without worry,” Anapliotis concludes.
Next time you rent a vehicle, think twice before plugging in your phone—it could save you more than just a headache.

