I am happy to say that all it needed was a new spark plug!!!!
Good to know.
Nevertheless I would really like to see a few high quality pictures of that removed "bad" sparkplug...
Personally I never had any issue with sparkplugs in none of my vehilces and never in my whole driving lifetime. My present car is 8 years old, has over 60.000km on it and runs still fine with the original factory sparkplugs. I´m going to change them in coming spring for precaution purposes only and the service manual wants me to do so.
My Like 200i shows nearly 8.000km on the speedometer now, but never an issue with the sparkplug.
Nevertheless I always have a NGK spare sparkplug in my glovebox.