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 ...

Before the W140-generation Mercedes-Benz Pullman appeared on the scene in 1994, heads of state had to make do with coachbuilt versions of the Mercedes-Benz S-Class. This meant that they turned to ...