The CREC engine is Audi's latest version of their 3.0 TSFI supercharged V6. In the UK it was introduced in the B8.5 S4 and S5 in early 2014. I believe this was also for ROW but excluding North America. However Audi also used this engine in 3.0 TFSI versions of other models including the A4, A5, A6, A7, A8, Q5 and Q7. There may be others. I am creating this post to share awareness that there is an issue with the magnetic clutch on the supercharger. From my perspective I am aware of this relating to tuned S5s. There have been two cases of clutch failure that I know about. Further details in an A5OC post. This prompted me to search further and I found at least one incidence from this thread on Audiworld. Clearly this is not just an issue for tuned engines. In essence it appears that the clutch can slip, either through a design or production fault or premature wear or both. In the Audiworld thread it seems that this was first noticed as noise heard as the clutch engages. For the two tuned S5s the indication was the EPC light. I have found a total of 5 versions of the supercharger clutch: 06E145105M 06E145105N - this is what my S5 has 06E145105Q 06E145105R 06E145105S - this is the latest version As far as I am aware, mine has not failed yet. I have no fault codes logged however I decided to check the advanced values in my engine module using VCDS and found this: IDE08947 Compressor magnetic clutch: aging Wear limit reached Since my engine is tuned (increased supercharger drive ratio and ECU/TCU remaps) I cannot be 100% sure that whatever algorithm Audi use to determine wear is still working properly, however it gives me cause for concern. My engine has done just less than 11K and has been tuned for the last 2.5K.