You are getting good advise. I had two, sold them only because friends wanted them. Excellent car to drive. Feels like the best car ever made when you are behind the wheel. Four times a year we drive 20hrs straight. The W140s were much better on these trips compared to my W126.

With the exception of a diesel engine head gasket the only work I did was sway bar linkages and door closer air compressor adjustment. Level of difficulty to repair is acceptable.

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Present
1987 300SDL
1991 300SL
1990 560SEL
2001 ML320

Past
1969 200D 1979-82
1983 300SD 1984-85
1972 250C 1982-02
1995 S350 2011
1997 S320 2012