Why is the engine of my Audi A4 stuttering when accelerating?

I recently noticed that my Audi A4 seems to stutter or lose power when I try to accelerate quickly. It's not as smooth as it used to be. What could be causing this issue and how can I fix it?

Your engine may be experiencing misfires which can cause the stuttering. It could be due to a faulty spark plug or ignition coil. Have a mechanic check and replace these components if needed.

Another possible cause could be a dirty or clogged fuel injector. This can reduce fuel flow and affect engine performance. Try using a fuel injector cleaner or have them professionally cleaned.

Sometimes a dirty or failing mass airflow sensor can cause similar issues. This sensor measures the amount of air entering the engine and if it's not working correctly, it can affect engine performance. Have it checked and possibly replaced if necessary.