Here is my friends spark plug from his skoda rs 1.4 tsi 180 bhp. What cause it we don’t know yet. Spark plug has just 1000km. Car just suddenlly started to hesitate. We thought that problems are coils, but then we removed spark plug. Diagnostic tool showed misfires on 1st cylinder. Then we replaced it and it was the same. After that we made compression test and news were not good.
It caused a lot of damaged to the car, because now 1st cylinder is not having any compression. Not news you wanna hear. We now have to disassembly whole motor. Car has only 93 000 km . Looks that tsi motors are not good as advertised or ngk spark plugs are not good, which I doubt.
Here is picture of coil, not looking good.
Here is picture of damaged sparkplug.
https://www.flickr.com/photos/96040100@N07/30575984015/in/dateposted-public/
