What causes the hesitation in my Audi 80's acceleration?

When pressing on the gas pedal, I noticed a slight hesitation before the car starts to accelerate. It's more noticeable when the car is warm. Is this a common issue and how can I fix it?

One possible cause of this hesitation could be a dirty or clogged fuel injector. It's important to regularly clean or replace the fuel injectors to ensure proper fuel delivery to the engine. Also, make sure to use high quality fuel to prevent buildup in the injectors.

Another potential cause could be a faulty oxygen sensor. This sensor helps regulate the air-fuel ratio in the engine and if it is not functioning properly, it can cause hesitation and other performance issues. Have a mechanic check and replace the sensor if necessary.