Why does my Audi A6's engine stutter when I accelerate?

I recently purchased a used Audi A6 and have noticed that the engine often stutters or hesitates when I accelerate, especially at higher speeds. What could be causing this issue and is it something I should be concerned about?

Have you checked the air filter on your Audi A6? A dirty or clogged air filter can affect engine performance and cause stuttering when accelerating.

It's possible that your spark plugs may need to be replaced. This is a common maintenance task for all vehicles and can help improve engine performance.