There are several cars I know of now that seem to be having or have had issues with spark plugs, specifically NGK plugs. These are now standard fit on2.0TFSi engines (CDL code) on the S3/Leon Cupra/Cupra R.
My car with only a few thousand misifres and runs terribly and a lad on here with a Leon Cupra with a BWJ engine is using the same newer style plugs and he has reported problems too. Another lad I know has a CDL code 2010 S3 and it could not get past 60mph until the NGK's were swapped out for Bosch's.
I have new VAG Bosch plugs to go in mine, and I know that the other two cars run much better now with the Bosch plugs than the NGK plugs. On my last car, I never had any issues with plugs at all and would have skipped a thread like this, but as I understand it, there issues on Ed30's with plugs too.
Interested to have thoughts and experiences on this.