When should I change the spark plugs in my Audi A4?

I am wondering at what mileage or age it is recommended to replace the spark plugs in my Audi A4. I want to make sure I am maintaining my engine properly for optimal performance.

According to Audi's maintenance schedule, the spark plugs should be replaced every 60,000 miles. However, if you notice any issues such as trouble starting the engine or decreased fuel efficiency, then it may be time to replace them sooner.

I recommend inspecting the spark plugs every 30,000 miles and replacing them if necessary. This will ensure that your engine is running smoothly and prevent any potential issues down the road.