"The new diesel engine uses advanced diesel technology developed by Chrysler's sister brand, luxury automaker Mercedes-Benz. The new 2007 Grand Cherokee's 3.0-liter common rail turbo diesel engine is based on Mercedes' Bluetech diesel engine technology"
"DaimlerChrysler's first application of the Bluetec diesel technology will be the six-cylinder Mercedes-Benz E30, which enters the market in the fall. The Jeep Liberty is equipped with a different diesel engine made by Italy's VM Motori."\
"The Grand Cherokee diesel will meet the Environmental Protection Agency's stricter 2007 emissions standards, but the SUV won't be sold in California, New York, Maine, Vermont or Connecticut, where environmental rules are even tighter."