It's been a while since you could get a diesel S-Class variant of any sort, even though the automaker periodically threw a bone to fans of oil-flavored cars during the past couple of decades. The W126 ...

It's hard to imagine a 1980s car that was better-built and more over-engineered than the majestic Mercedes-Benz W126. When powered by the virtually immortal OM617 five-cylinder turbodiesel engine, the ...