There’s a lot we don’t know about the hybrid Porsche 918 Spyder concept. Is its 500 HP combined or gas-only? Does performance really tail-off as charge runs down? So what do we know? Porsche might actually build this. Porsche claims the Spyder can accelerate to 60 MPH in 3.2 seconds, max out at 198 MPH and beat the Carrera GT around the Nurburgring with a 7:30 lap. Although we’re guessing it can do none of those things and still return 78 MPG, its claimed fuel economy. The mid-mounted 3.4-liter V8 revs to 9,200 although Porsche’s press material makes its output somewhat vague. We’re not sure if that “more than 500 HP” figure includes the 218 HP generated by the batteries or is the gas engine alone. A 7-speed PDK flappy paddle gearbox sends gas and some electric power to the rear wheels, while most of the electric power is directed to the fronts through a fixed ratio. The batteries are

See more here:
Porsche 918 Spyder Hybrid Concept May Actually Head To Production [Geneva Motor Show]