Ours is not to question why...
But in a nutshell, the M112 V6 engine is the M113 V8 with two fewer cylinders. Because they're "cast from the same block" they can share parts and act like the bobsy twins when they show up at cocktail parties together. It's a question of economics for Mercedes. The new V's aren't slouches either. They provide a little more torque and have consistently rated among the best engines in the world. The M112 has ranked among the ten best engines on Ward's list for the past three years.
You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman