How can I improve my Audi A7's engine performance?

I've noticed a decrease in my Audi A7's engine performance recently. Are there any ways I can improve it without making significant modifications?

Regularly changing your engine oil and using high-quality, recommended oil can help improve your car's engine performance. Also, ensure that your air filter is clean and replace it if necessary.

Adding a performance chip or tuning your engine can significantly improve your Audi A7's engine power and torque. However, these modifications can be expensive and may void your warranty.

Regularly maintaining your car's spark plugs and ignition system can greatly improve your engine's efficiency. In addition, using premium gasoline can also boost your engine's power.