How to troubleshoot the engine of an Audi A6?

I recently bought an Audi A6 and the engine seems to have some issues. It's making strange noises and there's a loss of power. What could be the cause of this and how can I fix it?

There could be multiple reasons for your engine troubles. It's best to take your car to a certified mechanic and get a thorough diagnosis done. It could be an issue with the fuel pump, spark plugs, or even the timing belt.

In the meantime, make sure to regularly check your oil levels and change your oil according to the manufacturer's recommendations. This could prevent any potential damage to your engine.