Why does my Audi A1 keep displaying the check engine light?

I recently purchased a new Audi A1 and the check engine light keeps coming on. How do I fix this issue and prevent it from happening again?

The check engine light can come on for various reasons, ranging from a loose gas cap to a faulty oxygen sensor. To pinpoint the exact cause, it is recommended to use a diagnostic tool or take it to a mechanic.

Be sure to check the gas cap first before taking any further action. Sometimes a loose or damaged gas cap can trigger the check engine light.