What are the most common warning signs of potential engine issues in an Audi 80?

I've noticed some strange noises and smells coming from my Audi 80 engine recently. What are the red flags I should be aware of before taking it to the mechanic?

One of the most common warning signs of potential engine issues in an Audi 80 is a check engine light that won't go away. If you notice this, it's best to have a mechanic check it out as soon as possible to avoid further damage.

Another red flag is difficulty starting your car, especially when the engine is hot. This could indicate issues with the ignition system or spark plugs. It's important to get this checked out to avoid being stranded on the road.