What are common issues with the Audi A2's engine and how can they be addressed?

I recently purchased a used Audi A2 and have been having some trouble with the engine. It seems to be making unusual noises and struggling during acceleration. What could be causing these issues and what steps should I take to resolve them?

The Audi A2 is known for its reliable engines, but there have been some reported issues with excessive oil consumption and faulty oil pressure sensors. It is recommended to have the engine checked by a certified mechanic and potentially replace the oil pressure sensor to prevent any further damage.

Another common issue with the Audi A2's engine is a faulty mass air flow sensor, which can cause rough idling and a decrease in fuel efficiency. It is best to have this sensor replaced by a professional to ensure proper functioning of the engine.