2013 V6 TDI or 4.2 V8 S TDI
#16
Advanced
Porsche marketing is pretty easy to figure out. Just look at the 911 and Boxster S and non-S variants differences in power and you have what the '14 V6 TDI will be from the TDI S. Factor in the BMW X5 TDI and my guess will be ~265bhp with 440ft-lbs from the SQ5 Audi power plant V6 TDI in the Cayenne TDI.
#18
For those in the market for a normal gas powered motor, I drove the Panamera 4 and the regular v6 sure is nice in there. Never tried the gas v6 in a Cayenne, but imagine it is probably nearly as impressive and should also be adequate.