How often should Audi A6's oil be changed?

I've heard varying recommendations for oil change intervals for my Audi A6. Some say every 3,000 miles, others say every 5,000 or even 7,500. What is the best practice for maintaining my A6's engine?

The recommended oil change interval for the Audi A6 is every 10,000 miles or once a year, whichever comes first. However, if you frequently drive in harsh conditions, such as hot temperatures or stop-and-go traffic, it is recommended to change the oil more frequently, around every 5,000 miles.