Why does my Audi A3's Check Engine light keep turning on?

I've noticed that my Audi A3's Check Engine light keeps turning on, and I'm not sure why. It's starting to worry me. Is there something wrong with my car? What should I do?

It's possible that there's an issue with your car's emissions system. You should take it to a mechanic to get it checked out.

Have you recently filled up on gas? If the Check Engine light came on after a fill-up, it could be an issue with the fuel cap not being closed properly. Check to see if the cap is on tight.

Another common cause of the Check Engine light turning on is a loose or damaged gas cap. Check to make sure your gas cap is in good condition and properly sealed.