Iv got a W124 ce200 coupe with the M111.Happy? Eh...Taking a wee bit getting used to after running about in a renault 21 Turbo for a couple of years.Gettin there SLOWLY tho!
I had the same engine in my 210 , i taught it was a gerat engine . The car had over 120000 miles covered and never used any oil between services . I was able to get around 30 mpg using the car on short runs and on long journeys I could easly get 33 34 mpg .