We have been expecting a diesel engine option for the Porsche Cayenne for a while, and it appears that March of 2009 may be the date. While Porsche purists the world over may be upset over an oil-burner underhood (or under trunk) of any Porsche model, we don't see the big deal. After all, it's not like the Cayenne, despite what Porsche would have you believe, has all that much 911 DNA in it anyway. A modern diesel engine could help Porsche meet new fuel economy regulations for a lower cost than a hybrid, and the diesel V6 engine sourced from Audi should prove plenty capable of hauling the SUV's mass-tonnage around. Though Audi's current TDI six displaces 3.0 liters and is good for 240 HP and 406 lb.-ft. of torque, rumors indicate that Porsche will be using a 3.2 liter version of this engine that makes at least 300 horses. We think that should do rather nicely.
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