The Porsche 918 Spyder will feature a high revving 500-plus horsepower V8 engine assisted by two electric motors with a total of at least 218 horsepower, yet Porsche estimates it will consume only 3.0 L/100 km based on the New European Driving Cycle (NEDC).

To ensure the Porsche 918 Spyder’s worldwide exclusivity, Porsche will produce no more than 918 examples, and the U.S. base manufacturer’s suggested retail price is $845,000 (excluding destination and handling charges).

With its design inspired by past Porsches like the Carrera GT super sports car and the legendary 917 and highly successful RS Spyder race cars, the Porsche 918 Spyder remains faithful to the 2010 concept car. Unlike the concept car, the two-seat production version, based on a carbon fiber-reinforced plastic monocoque, will feature a manual roof system with removable panels that can be stored in the front luggage compartment.

The Porsche 918 Spyder will be powered by a unique plug-in hybrid system that will include a high-revving, mid-mounted V8 engine with capacity of more than 4.0 liters and producing at least 500 horsepower. The engine will be based on the Porsche RS Spyder racing engine that demonstrated its impressive performance and efficiency through multiple Michelin Green X Challenge victories in the American Le Mans Series, the Le Mans Series and the 24 Hours of Le Mans. Power will be transferred to the rear wheels via Porsche’s compact, seven-speed Porsche-Doppelkupplung (PDK) double-clutch gearbox.

Two electric motors – one each on the front and rear axles – together will provide approximately 218 additional horsepower. This configuration also will offer an innovative, variable all-wheel drive system with independent control of the drive forces on both axles. Electrical energy will be stored in a liquid-cooled lithium-ion battery that can be recharged from a standard household outlet. Electric-only driving range is expected to be more than 16 miles on the NEDC. Recharge time will depend on each country’s electrical power network, but charging is expected to take about seven hours at 110V/10A in the United States. A quick-charge option is being evaluated to further reduce charging times.

With anticipated combined fuel consumption of just 3.0 L/100 km on the NEDC, this equates to CO2 emissions of only 70 g/km or 112 g/mile. On the other hand, the Porsche 918 Spyder will deliver super sports car performance. It is estimated that the final production version will accelerate from zero to 60 mph in about 3.1 seconds on its way to an estimated top track speed of 199 mph. It should also tackle Germany’s famed Nürburgring Nordschleife in less than 7 minutes and 30 seconds, two seconds faster than the Porsche Carrera GT. Under the right conditions, the Porsche 918 Spyder will be able to drive on electric power alone at speeds up to 94 mph for limited distances.

Customers who order the Porsche 918 Spyder also have the opportunity to acquire a special-edition 911 Turbo S Coupe or Cabriolet. Also limited to no more than 918 units, the Porsche 911 Turbo S Edition 918 Spyder will have exterior and interior design elements echoing the plug-in hybrid 918 Spyder supercar’s styling. It features similar exterior colors, carbon-fiber elements inside and out, enhanced leather equipment and numerous acid-green accents on items such as the brake calipers, illuminated sill plates, interior stitching and instrument cluster needles. A limited-edition badge on the glove compartment door will feature the same production number as the customer’s 918 Spyder.

Worldwide 918 Spyder customers can begin ordering this special edition Porsche 911 Turbo S sports car today, and customer deliveries will start later in 2011. The U.S. base manufacturer’s suggested retail prices for the Coupe and Cabriolet versions are the same as the standard Porsche 911 Turbo S models, $160,700 and $172,100 respectively, excluding destination.