Why is the fuel consumption of my Audi 80 increasing?

I've noticed that my Audi 80 has been consuming more fuel than usual. I regularly maintain my car, so I'm not sure what could be causing this issue. Can anyone provide insight into what might be causing this?

It could be a faulty fuel injector. I had a similar issue with my Audi A4 and replacing the fuel injector immediately improved my fuel efficiency. It's important to have a professional mechanic check it out and replace it if necessary.

Have you checked your tire pressure lately? Underinflated tires can significantly impact fuel consumption. Make sure your tires are properly inflated according to the manufacturer's recommendations.

It may be time for a tune-up. Dirty air filters and spark plugs can decrease fuel efficiency. I suggest scheduling an appointment with a trusted mechanic to have them check and replace any necessary components.