When do you change timing belt on Audi A6 2.7TDI?

The timing belt on an Audi A6 2.7 TDI should typically be replaced every 60,000 to 80,000 miles, or every 5 to 7 years, whichever comes first. It's crucial to consult the owner's manual for specific recommendations, as maintenance schedules can vary based on driving conditions. Regular inspection is also important to catch any signs of wear or damage.