Why does my Audi 80's engine make a ticking noise at higher speeds?

I've noticed that at high speeds, my Audi 80's engine starts making a ticking noise that wasn't present before. What could be causing this issue and how can I fix it?

The ticking noise could be a sign of a potential issue with your tappets. It's important to have this checked by a mechanic as soon as possible to avoid any further damage to your engine. I would recommend finding a reputable mechanic in your area and scheduling an appointment for a thorough inspection.

One possible cause of the ticking noise could be low oil levels or dirty oil. Check your oil levels and if they are low, top them up. If the oil is dirty, consider getting an oil change. If the noise persists, it's best to take your car to a mechanic for a proper diagnosis.