<p>  </p> <p>With the Internet of Things (IoT) development, vehicles have become an essential part of this data transmission network. In order to access the vehicle's status via personal mobile devices, an increasing number of car manufacturers have began to provide mobile applications; some third-party companies offer Bluetooth adaptors for the On-Board Diagnostics-II (OBD-II) port on vehicles made post-1996 in the United States. By connecting the smartphone and the vehicle with either of these methods, the mobile applications can retrieve detailed data and the history of the vehicle. This research aims to answer what forensically relevant artifacts can be recovered from the MB Companion, FIXD, and Nonda ZUS applications. The research methods include adapting the National Institute of Standards and Technology (NIST) forensics framework, generating mock user data, extracting user data, and conducting in-depth digital forensics analysis. The recovered geolocation data, the vehicle-related artifacts, the applications on different vehicle brands, and the applications on various device platforms are primarily examined in the research.</p>