How often should the transmission fluid be changed in an Audi A4?

I recently purchased an Audi A4 and I'm not sure when I should have the transmission fluid changed. Can anyone provide some guidance on the recommended frequency for changing it?

According to Audi's official recommendation, the transmission fluid should be changed every 40,000 miles.

I've had my Audi A4 for 5 years now and I change the transmission fluid every 30,000 miles. My mechanic suggested doing it a bit more frequently for optimal performance.

It's better to be safe than sorry with your transmission fluid. I recommend changing it every 50,000 miles, just to be sure everything is running smoothly.