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Porsche has definitely been testing diesel-powered versions of the Cayenne SUV as evidenced by the recent spy shots of on filling up from a diesel pump in northern Sweden. However, that doesn't mean the Stuttgart-based high performance manufacturer has definitively decided to actually produce such a beast. Klaus Berning, Porsche's head of sales and marketing has said that a diesel Cayenne won't come to market unless it can be a sales success in the U.S. market. So far, there have only been a han

Photographers hanging out in Arjeplog. Sweden have seen proof that Porsche is indeed working on a diesel powered Cayenne. When automakers are testing vehicles up in Northern Sweeden they generally fill the fuel tanks at public gas stations in town before heading out to the frozen lakes to do their testing. The Cayenne in question was witnessed being filled from one of the black diesel pumps and the distinctive sound of a compression ignition engine was clearly audible as it pulled away. The dies

In the past, Porsche has repeatedly played down the idea of offering diesel engines in their product line. The rationale is that oil burners don't fit the character of Porsche's sports cars. That may well be true for cars like the Boxster and 911 but the Cayenne is a different animal. Porsche has also said that the relatively low volumes of their models would make it hard to financially justify the development of a new diesel engine. Porsche is apparently now ready to introduce a diesel-powered