Why is my Audi 80 making a strange rattling noise when I accelerate?

I've noticed a loud rattling noise coming from my Audi 80 when I accelerate, but it seems to go away when I reach higher speeds. What could be causing this and how can I fix it?

It's possible that the rattling noise is coming from a loose heat shield on your exhaust system. This is a common problem with Audi 80s and can be easily fixed by tightening the bolts or replacing the heat shield if it's damaged.

Another potential cause could be a worn-out or damaged engine mount. This can cause the engine to vibrate and create a rattling noise when accelerating. Have a mechanic inspect your engine mounts and replace any that are damaged or worn.

If the rattling noise only occurs at certain speeds, it could be a problem with your transmission. Low transmission fluid levels or a damaged transmission can cause rattling noises. Have a mechanic check and refill your transmission fluid, and if the issue persists, consider getting your transmission serviced.