How often should the spark plugs be replaced in an Audi 80?

I have noticed my Audi 80 has been running a bit rough lately. I suspect it might be time to replace the spark plugs. How often should they be replaced for optimal performance?

Spark plugs should be replaced every 30,000 miles on average for most vehicles, including the Audi 80. However, if you notice any signs of wear or poor performance, it's best to replace them sooner to avoid potential issues.

It is recommended to follow the manufacturer's guidelines for spark plug replacement in the Audi 80. Typically, they should be changed every 60,000 miles, but it's always a good idea to check them regularly for any signs of wear or buildup.