service d

My SLK 300 v6 (R171) is due on mileage to have its spark plugs changed which I have been quoted by 2 indy garages in addition to the service B I already paid for (which was actually showing as D on my dashboard but the garage said they're basically the same thing). Price quoted was £203...

Good evening, This is my first post. I have been searching for a list of what is included in a service D. Cant seem to find a definitive list anywhere. Maybe there isnt one. I know its a big service, but not having a list of items does mean non-MB garages will struggle. Maybe thats the point...