
The QR code for motor vehicles is located at the bottom left corner of the front windshield, and in some cities, it is also found on the license plate. The QR code contains license identification information such as the issuing authority, unique serial number, and license plate number, as well as technical parameters of the vehicle and owner information. Only internal traffic police equipment can scan the QR code; ordinary mobile phones cannot recognize the QR code on the license plate, preventing the leakage of personal information. The specific application of QR code vehicle management involves the management of vehicle information, safety, inspection, and approval. As a means of transportation, vehicles and their drivers are constantly in dynamic motion through time and space.

I recently helped a friend look into this. There are several scenarios for the motor vehicle QR code: for new cars, it's located under the environmental label in the corner of the windshield, about the size of a business card; for new energy vehicles, it's even more convenient—you can usually find the electronic version in the vehicle information menu on the central control screen. For some older cars, you may need to check the small icon on the supplementary page of the vehicle license. Last time at the DMV, I saw an owner scan it with their phone, which directly redirected them to the Traffic Management 12123 app. By the way, many brand apps now generate a dedicated QR code after binding the vehicle, and scanning it allows you to view the vehicle's records. If you really can't find it, I recommend checking the manual, as manufacturers usually print the QR code location on the pages with vehicle parameters.

Our generation of veteran drivers is accustomed to checking paper labels. The most common locations for vehicle QR codes are three: the lower right corner of the sticker with vehicle information on the bottom left of the front windshield; next to the vehicle nameplate on the passenger door frame; and the white label on the inside of the engine hood. If a used car doesn't have a label, don't panic. Last time I accompanied someone for a transfer, the DMV staff said that scanning the VIN code with the Traffic Management 12123 APP can also generate an equivalent QR code. Remember not to hold your phone too close when scanning—keeping it about ten centimeters away ensures the clearest focus.

Having worked in auto repair for so many years, I've handled countless vehicles. The QR code is usually embedded in the vehicle's identification plate, most commonly found on the firewall in the engine bay. Just wipe the metal plate clean with a damp cloth to scan. Some Japanese cars prefer to print it under the B-pillar rubber seal, while German cars often place it on the label in the spare tire well. Actually, inspection stations' machines can now directly read the VIN, making the QR code optional. If you really can't find it, just visit a dealership to have them read the VIN with the manufacturer's diagnostic tool, and they can print a document with the code for you.

As a tech enthusiast, I've researched this mechanism. The vehicle QR code is essentially an encrypted version of the VIN, with new regulations requiring its physical presence. Currently, there are three carrier formats: laser-etched aluminum plates (commonly found in engine compartments), waterproof adhesive stickers (windshield/door frame locations), and dynamic electronic codes (displayable via new energy vehicle systems). The most reliable method is to check Appendix II of the vehicle conformity certificate, where manufacturers clearly mark the QR code coordinates. Some models may also have backup labels near the OBD port under the steering wheel.


