Why is my Audi A6 displaying 'Check Engine' warning?

I own a 2015 Audi A6 and the 'Check Engine' warning light has been appearing intermittently. What could be the cause of this and how do I resolve it?

The 'Check Engine' warning can be due to various reasons, ranging from a loose gas cap to a more serious engine issue. It is best to bring your car to a certified mechanic to diagnose the specific problem.

It's always a good idea to check your gas cap first if the 'Check Engine' warning comes on. Make sure it's tight and in good condition. If the problem persists, seek professional help.