Hello everyone, I bought my (56 Reg) E280 Mercedes last year. 48K on the clock. The dealer ( Chichester) did a B service before I took delivery. I drive less than 5K per year on my Mercedes. Now the MOT is due. Car's computer is saying next service due in 9000 miles. I went to my local dealer to enquire about MOT. The guy at Service desk said the car needs a full service at 15000 miles or 12 months whichever comes first. Looking at his computer, he said my car will need a 50K mile service and quoted me for a £500+ service including usual parts. They will renew my road side assistance as well. I was wondering as to: 1) What's the point of a computer in the car saying when next service is due if the car need service every year anyway? 2) The guy at the dealer said they will hook up the car to a computer that will tell them what parts need changing, is that the usual practice? How frequently are the Oil/air filters , spark plugs etc. are changed? 3) Is it worthwhile extending the car warrenty (MB warrenty cover Tier 1)? 4) Should the Air con be serviced every year? Thanks for any help or advice in advance. DM.