I said I would post when I had the solution to the cutting out problem that I was having with my 190E. After taking the car to the local independent specialist on several occasions I finally contacted Andy Gayle in Smethwick . I can only say I wish that I had done so earlier. They diagnosed a faulty/damaged air flow meter. After fitting a new air flow meter (not cheap but there we are) they made the necessary adjustment to the fuel injection system and Bobs your mothers brother as they say. I have driven the car approx 1000 mile since the work was completed & there is no sign of recurrence, needless to say I am delighted the car now drives like new, fuel consumption has improved and I am now fully enjoying the Mercedes experience. I would recommend anyone with similar problems to give Andy Gayle a try. I would be happy to provide anyone with contact details if they PM me.