Hybrid Cars gives us an in depth look and review of the Tesla Model S (85 kWh) versus the Porsche Panamera S E-Hybrid.
Model S (Left) & Porsche Panamera S E-Hybrid (Right)
Several key points are shown along with how each point differs among the two vehicles.
The price difference between the 2 from entry level and as optioned are in a completely different ballparks as the Panamera S E-hybrid costs ~ $40,000 more than the Model S, though the Model S, as shown, is not fully equipped while the Panamera S E-Hybrid appears to be so.
For the Model S, there is an available Performance version for an extra $10,000, as well as the All Glass Panoramic Sunroof if desired. Perhaps the Performance option would be a fair comparison as far as matching the performance aspect of the Porsche, if that's your main interest in a sports sedan.
It is obvious that the Model S and Panamera S E-Hybrid are two entirely different vehicles, so what it boils down to is which vehicle meets your needs and how much cash you're able to spend.
Interested in a further comparison? (You can check out Hybrid Cars' review here)