Let’s see how this newest one, the E350 BlueTec, stacks up, shall we? Stirring Diesel into the E-class Formula In every regard save for its powerplant, the E350 BlueTec is a regular E350.

Despite this fall from fashion, there remains a huge amount to like about a good diesel engine—and very few are better than the turbocharged six-cylinder that Mercedes offers in the S-class for ...