I have owned a white Mercedes Benz 200 (W123) since 1985 and have so far done around 127,000 miles. The average fuel consumption has been around 18 m.p.g.
After 17 years, it has overhauled engine.
It has shown some sign of rust around the rear and front windscreens, but they have now (April 2002) been repaired and the whole car made to look like new.
Value for money, it has been an outstanding car and there is no further depreciation cost involved.
18 MPG?!!! That must be a typo my '83 200T returns between 25 and 30mpg.