The service plan for the Audi A6 C8 (models from 2019 onwards) generally follows a alternating cycle of Standard Maintenance
Download the PDF. Read the section marked "Flexible Service Intervals" (LongLife vs. Fixed). Decide based on your driving style—highway cruiser (LongLife) or city sprinter (Fixed). Then, put the printout in your glovebox next to the owner's manual.
The A6 C8 typically follows one of two service regimes: or Flexible (LongLife) Service .