I have been trying to find out about extending my e220d warranty and whether it includes the Adblue system after speaking to them all they say is it's not excluded so "it must be included" and said they cannot write down everything it seems a bit vague to me and open to interpretation so can anyone tell me if it is included...the quote that I got was 1 year £463 and 2 years £804 this is on a 2019 E220d