What is the most common cause of engine hesitation in an Audi 80?

I am experiencing sudden hesitation when accelerating in my Audi 80. Can someone help me identify the most common cause for this issue?

The most common cause for engine hesitation in an Audi 80 is a dirty or faulty mass air flow sensor. It is located between the air filter and the intake manifold. I suggest cleaning or replacing it as a first step.

Another common cause for engine hesitation in an Audi 80 is a clogged fuel filter. This should be replaced every 30,000-50,000 miles. You could also try using a fuel system cleaner to see if that improves the issue.