How do I maintain optimal performance in my Audi A4's engine?

I've noticed a decrease in my Audi A4's engine performance recently and I'm not sure how to address it. What steps can I take to ensure my engine is running at its best?

Regularly change the engine oil and filters to keep your engine clean and running smoothly. This will also prevent wear and tear on engine components.

Make sure to use high-quality fuel and follow the recommended octane level for your Audi A4. Low-quality fuel can negatively impact engine performance.

Keep up with scheduled maintenance and tune-ups for your engine. This will ensure all components are functioning properly and catch any potential issues before they become bigger problems.