Do not plug the USB interface into the computer until the software instructions tell you to do so.

To avoid frustration and failed installations, ensure you have the following ready: The OBD2-to-USB hardware.

Launch the software using the administrator shortcut you created. Go to the or Configuration menu.

Installing VAG Tacho 50, also known as the VAG Tacho 50 Extra Quality, involves several steps and considerations. VAG Tacho refers to a tool or software used for odometer correction or mileage adjustment in vehicles made by the Volkswagen Group (VAG), which includes brands like Volkswagen, Audi, Seat, and Skoda. The "Extra Quality" might refer to an enhanced version of the tool or software that provides more accurate or reliable results. However, it's crucial to note that tampering with a vehicle's odometer reading is illegal in many jurisdictions and can have significant legal consequences.

This typically indicates a dongle detection issue:

Windows 7 (32-bit is highly recommended for driver stability), though Windows 10 can work with compatibility settings.

Choose and point the search to the "Drivers" subfolder within the VAG Tacho folder you created in Step 1.

This guide is current as of 2026. Software versions and compatibility may change. Always refer to your specific product documentation and vehicle manufacturer guidelines.