The other possible alternative powertrain for the Panamera is a diesel engine. While the Cayenne will get the 3.0L diesel engine from Audi, the Panamera could double that cylinder count by being bestowed with Audi's mammoth 6.0L V12 TDI, which punches out 500 horsepower along with an incredible 758 lb-ft of torque. In Audi's large Q7 SUV, that powerplant manages nearly 20 miles per gallon, and it should do considerably better in the low-slung Panamera if it indeed finds its way underhood. Expect all of these options to come at a high cost, as the normal six-cylinder Panamera is expected to fetch $127,000 and the higher spec. turbo V8 model will go for nearly $200 grand. Sounds like the upcoming four door Porsche hybrid will require very deep pockets.
[Source: Inside Line]