How do I properly maintain the performance of my BMW M3's engine?

I've been noticing a decrease in my BMW M3's engine performance and I want to make sure I take the necessary steps to maintain it. What specific maintenance tasks do I need to perform regularly and what factors could be contributing to the decrease in performance?

Regularly changing the oil and filter, checking and replacing worn spark plugs, and keeping up with scheduled maintenance tasks are crucial for maintaining the performance of your BMW M3's engine. Additionally, factors such as driving habits, fuel quality, and environmental conditions can affect engine performance and should be taken into consideration.

It's also important to check for any intake or exhaust leaks and keep the air filter clean. If you notice a decrease in performance, it might be worth taking your BMW M3 to a trusted mechanic for a professional diagnostic check.