Why is the check engine light on in my Audi A7?

I recently noticed that the check engine light has come on in my Audi A7. What could be causing this and what should I do?

The check engine light can come on for a variety of reasons, ranging from a loose gasoline cap to a more serious issue with the engine. First, you should check to make sure the gasoline cap is properly tightened. If the light remains on, it is best to take your Audi to a trusted mechanic for an engine diagnostic test. They will be able to determine the exact cause of the light and provide you with a recommended course of action.