What is the cause of excessive exhaust smoke in an Audi A2?

I have noticed that my Audi A2 is emitting excessive exhaust smoke. What could be the reason behind this issue?

One possible cause of excessive exhaust smoke in an Audi A2 could be a clogged or dirty air filter. Make sure to check and replace the air filter regularly to avoid this issue.

Another reason for excessive exhaust smoke could be a leak in the exhaust system. Inspecting and repairing any leaks can help improve the performance of your Audi A2.

In some cases, a malfunctioning oxygen sensor can also lead to excessive exhaust smoke. It is recommended to get the sensor checked and replaced if needed.