When you look at the specs of the Mercedes S350 Bluetec and see that its diesel engine produces only 240 hp, you might think that the two-ton-plus sedan would feel underpowered. Not so, thanks to a ...

It doesn't take long to see evidence of that age. The W221 uses an older version of Mercedes' COMAND infotainment system, and features that were once the cutting edge now look dated. The full-color ...