A system for providing mobile application-based vehicle diagnostics includes a mobile communication device (“device”) having an installed mobile application (“app”). The app receives an instruction to obtain vehicle condition information of a vehicle, determines a geolocation of the device, and displays a geolocation of a diagnostic service provider on the device. A diagnostic tool operable by the diagnostic service provider retrieves diagnostic data from the vehicle. A server operable by a different entity than the diagnostic service provider establishes a user profile associated with a user of the device and including a vehicle identification number (VIN) of the vehicle, receives the diagnostic data from the diagnostic tool, detects the VIN in the diagnostic data, derives vehicle condition information from the diagnostic data, associates the vehicle condition information with the user profile by matching the VIN, and provides the vehicle condition information to the app to be displayed on the device.