Not to bring this topic up again but i have a question regarding the build up as i'm looking to buy an A4.

I'm not doubting the build up problem exists but obviously people know about it and still buy the cars. I have spoken to friends of mine with A4s and they say if its happening they never noticed it. No sluggish driving even when the car hits 40-50k miles. So my question is:

-Is this whole carbon buildup problem blown out of proportion? I'm not going to be modding the car or tuning the engine or racing it. Am I still getting into trouble buying a car with a known problem and no known fix. Am i going to not just see slight hp losses as the car ages but also check engine lights, misfires, and engines not starting. I get no car runs fine forever, but i dont want to buy a broken car before its ever been driven.

-would this problem keep you from buying the car?