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

I have noticed a decrease in my Audi A4's engine performance lately. What are some tips to maintain its performance? Is there anything I can do on my own or should I take it to a professional?

First and foremost, it is important to regularly maintain your Audi A4's engine. This includes changing the engine oil, checking the air filter, and inspecting the spark plugs. If you are not comfortable doing these tasks yourself, it is best to take your car to a professional mechanic.

Additionally, keeping your car's fuel system clean can also help improve engine performance. This can be done by using a fuel system cleaner regularly. It is also important to use quality fuel and not let your fuel tank run too low.

Another important aspect to consider is the engine's cooling system. Make sure the coolant levels are topped up and the radiator is clean. This will prevent overheating and potential damage to your engine.