It could pack more than 800 horsepower.

If you are in the market for a performance SUV and the 541-horsepower (404-kilowatt) Porsche Cayenne Coupe Turbo doesn’t satisfy your taste, then we have some good news. What you see in the gallery below are the first spy photos of a hot hybrid version of the coupe-inspired luxury crossover. All the preliminary details seem pretty intriguing so let’s take a closer look.

At first, this might look like a regular Cayenne Coupe Turbo S prototype but if you take a closer look at the rear bumper, you’ll definitely notice there’s something weird going on there. Our spies managed to take a few shots showing what’s underneath the bumper and, as you can see, there are two round pipes hiding there. Mind you, the two side squared pipes are fake.

Gallery: Porsche Cayenne Turbo S E-Hybrid RS Coupe spy photos

According to unofficial information, this exhaust layout hints that there’s a new powertrain under the hood. More precisely, word on the street is this Cayenne trial car features the upgraded hybrid mill that’s also currently being tested in the "Über-Panamera."

As a reminder, the current range-topper in the Cayenne family is the Turbo S E-Hybrid, which packs a peak output of 670 hp (500 kW) from its gas-electric hybrid powertrain. It combines a 541-hp (403 kW) twin-turbocharged 4.0-liter V8 and a 134-hp (100 kW) electric motor. If the rumored numbers of the upgraded version turn out to be true, this will represent a healthy boost of 150 hp (112 kW) over the current flagship variant.

Of course, nothing is confirmed at the moment and the only evidence of a hotter Cayenne Coupe so far are these spy shots. Whether Porsche is just experimenting or is indeed planning a production super-hybrid, only time will tell. Until the moment of truth arrives, take a better look at the photos and tell us in the comment section below – do you think the Stuttgart-based firm is developing a 800+ horsepower coupe-SUV?

Photos: CarPix