How do I fix a noisy engine in an Audi 80?

My Audi 80's engine has been making a loud knocking noise. It's been getting worse and I'm worried it might be causing further damage. What could be causing this noise and how can I fix it?

First, try checking your oil levels and see if it needs to be topped up. If that doesn't solve the issue, it could be an issue with your engine's valves. It's recommended to take your car to a mechanic for a proper diagnosis and repair if needed.

Another possibility could be a loose or damaged belt in your engine. Check to see if any of the belts look worn or if they are making any unusual noises. If so, it's best to get them replaced as soon as possible to avoid any further damage.

It's also important to regularly maintain your Audi 80 to prevent any potential engine issues. Make sure to get regular oil changes and tune-ups to keep your engine running smoothly.