Our friends at Popular Mechanics have just driven three Mercedes SUVs equipped with the Bluetec diesel engine. The ML, GL and R all share the same 320 CDI Bluetec oilburner, with Popular Mechanics reporting that it does an ample job of powering all three, despite occasionally feeling overwhelmed in the big GL. The diesels carry a price penalty of about $1,000 over models equipped with a similar-capacity V6 gas engine, but deliver 25-33 percent better economy. Sounds like a decent trade-off to us.


[Popular Mechanics]