My present car is a Lexus LS430, which is more than 3 years old and has completed 29,500 miles in a faultless manner. I am considering changing it for a new MB S Class (latest facelift). Now that they only sell two models in the UK with short wheelbase: the S350 CDI and the S350 direct petrol injection, I am wondering which model would suit my needs best? I do approx 5,400miles in the UK during the year, mainly short trips, and about 4,500miles in Europe each year, am I better off paying a little more for petrol and RFL by buying the S350 petrol, or the S350 CDI, which would be better on continental roads and cheaper to run? I have been reading your many letters recently about diesel engines with unreliable particulate filters. I would welcome your opinion as to my best course of action (Perhaps even keeping the LS 430)