Porsche has opened itself up to a new class of buyers with its Cayenne, and the automaker has also rediscovered the value of the diesel engine.The Cayenne diesel is making a splash in Europe. Around 75% of all Cayennes sold in Europe last year were equipped with diesel engines. Porsche's latest generation more efficient, consuming just 7.4 liters per 100 kilometers, or 20 percent less than the previous model. Buckle up as we introduce you to the powerful 3-liter V6 diesel Cayenne.