How do I check if my Audi A5's engine is functioning properly?

I'm concerned about the performance of my Audi A5's engine. What steps can I take to ensure that it is working correctly?

To check the engine's performance, start by inspecting the engine oil level. Low oil levels can cause damage to the engine and are a sign of potential issues.

Another important aspect to check is the exhaust smoke. If there is excessive smoke coming from the exhaust, then there may be a problem with the engine's combustion process.

Additionally, listen for any strange noises coming from the engine while it is running. Unusual sounds could indicate a potential issue that needs to be addressed.