What are the common causes of a check engine light in an Audi A3?

My check engine light just came on in my Audi A3. What could be causing this and how should I address it?

The check engine light can come on for a variety of reasons, such as a loose gas cap, a malfunctioning sensor, or a more serious issue. It's important to have your car diagnosed by a professional to determine the exact cause.

Ignoring a check engine light can lead to more costly repairs in the future. Make sure to take your Audi A3 to a reputable mechanic to have it properly diagnosed and repaired.

In some cases, the check engine light can come on due to a minor issue that can be easily fixed. Check your gas cap to ensure it's tightly sealed and see if the light goes off after a few trips. If not, it's best to get it checked by a professional.