[7][8] The 918 Spyder's 6.8 kWh lithium-ion battery pack delivers an all-electric range of 19 km (12 mi) under the US Environmental Protection Agency's five-cycle tests.

[16] Set to be the replacement for the 918, the Porsche Mission X was presented first, at the preamble to the centenary of the 91st 24 Hours of Le Mans, in June of 2023 and to be produced in 2025.

One 115 kW (156 PS; 154 hp) electric motor drives the rear wheels in parallel with the engine and also serves as the main generator.

This motor and engine deliver power to the rear axle via a 7-speed gearbox coupled to Porsche's own PDK double-clutch system.

[ii][25][26] In Motor Trend's independent test the Porsche 918 set a production-car track record at Willow Springs Raceway.

[16][27] The U.S. Environmental Protection Agency (EPA) under its five-cycle tests rated the 2015 model year Porsche 918 Spyder energy consumption in all-electric mode at 50 kWh per 100 miles, which translates into a combined city/highway fuel economy of 3.5 L/100 km (81 mpg‑imp; 67 mpg‑US).

The total range with a full tank of gasoline and a fully charged battery is 420 miles (680 km) according to EPA tests.

In Race mode a push-to-pass button initiates the Hot Lap setting, which delivers additional electrical power.

The package included magnesium wheels specially manufactured by BBS, an extended rear diffuser, and interior parts covered in Alcantara instead of leather.

[40] At the 2011 North American International Auto Show in Detroit, Porsche unveiled the RSR racing variant of the 918 Spyder.

Instead of using plug-in hybrid technology, power for the two electric motors is provided by a flywheel accumulator KERS system that sits beside the driver in the passenger compartment.

[41] In September 2013 a 918 fitted with the optional 'Weissach Package' set a Nürburgring lap time of 6:57 on the 20.6 km (12.8 mi) road course, reducing the previous record by 14 seconds, and making it the first street-legal production car to break the 7-minute barrier.