At launch, the rear-wheel-drive Panamera will come with a 300-hp 3.6L V6 from V-Dub. A 400-hp 4.8L V8 will also be available along with a turbocharged 500-hp version. Porsche has already confirmed a hybrid Panamera for 2010 that will reduce fuel-consumption by 30 percent.
According to Automotive News, the Stuttgart based automaker is now considering a diesel version along with a targa top version for the Panamera as well.
Source: eGM Cartech