Data Analysis of Cars and Apps: Tesla Particularly Data-Hungry

US researchers have conducted a comprehensive investigation into the data practices of 21 car models and their associated apps. The aim of the study was to determine what data is collected and whether it is shared with third parties. The results show significant differences between manufacturers, with Tesla identified as particularly data-hungry. The analysis included both vehicle data and the information collected through the manufacturers' apps. Various data categories were examined, including location data, vehicle diagnostics, and usage statistics.

The researchers found that Tesla exhibited the highest values in nearly all categories regarding the amount of data collected. In contrast, Honda showed a significantly more restrained data policy. Following the publication of the study's results, Honda announced plans to tighten its data collection practices. The company intends to increase transparency regarding the data collected and provide users with more control over their information. The study also investigated consumer reactions to data collection.

Many users are unaware of the volume of data collected and have concerns about their privacy. The researchers recommend that automobile manufacturers provide clearer information about their data collection practices to strengthen consumer trust. Another aspect of the investigation was the analysis of the security practices of the apps. The researchers discovered that some apps had security vulnerabilities that could potentially be exploited. These weaknesses could allow attackers to access sensitive vehicle data or even take control of the vehicle.

The study also highlighted the legal framework for data collection in the US. Currently, there are few specific regulations governing data collection by automobile manufacturers. However, this may change as more consumers and privacy advocates point to the need for stricter regulations. The results of the study could have far-reaching implications for the automotive industry. Manufacturers that do not handle their data practices transparently risk losing the trust of their customers.

Researchers emphasize that a proactive approach to data privacy and security will be crucial for the future of the industry. The investigation was conducted by a team from the University of California, Berkeley, and is part of a larger research series on digital privacy in the automotive sector. The full results of the study will be published in an upcoming issue of the Journal of Automotive Technology. The researchers also noted that consumers are increasingly looking for vehicles that better protect their data. According to a survey from 2025, 67% of respondents stated that they would consider a manufacturer's data security practices when making a purchase decision.