Porsche announced its return to top-level prototype racing in July 2011, targeting the LMP1 category of the FIA World Endurance Championship. Fritz Enzinger was recruited from BMW to lead the LMP1 programme as vice-president, and Alex Hitzinger — formerly Red Bull Racing's Head of Advanced Technologies — was appointed to oversee technical design. The car was named 919 Hybrid to honour Porsche's tradition of numbering its Le Mans cars and to acknowledge its first foray into hybrid racing technology. A total of nine chassis were built across the programme's four seasons.
The 919 Hybrid was built around a carbon fibre and aluminium honeycomb monocoque, with aerodynamic development conducted over 2,000 wind tunnel hours at Porsche's Weissach facility and the University of Stuttgart. The car measured no more than 4,650 mm in length and weighed a minimum of 870 kg.
At its heart sat a two-litre, 90-degree V4 turbocharged petrol engine producing approximately 500 hp, mounted mid-ship and serving as a structural load-bearing member of the chassis. It ran at 9,000 rpm with a single Garrett turbocharger and direct fuel injection, driving the rear wheels through a hydraulically operated seven-speed sequential gearbox with rear-lock differential.
Two separate energy-recovery systems distinguished the 919 from conventional prototype racers. A rear exhaust-driven twin-turbine generator captured thermal energy from exhaust gases. A 185 kW motor-generator unit on the front axle converted braking kinetic energy into electricity, stored in water-cooled A123 Systems lithium-ion batteries on the passenger side. Under acceleration, the front MGU operated as an electric motor, delivering an additional 400 hp to the front wheels for a combined total of approximately 1,000 hp and temporarily making the car four-wheel drive. In 2014 the car competed in the 6 MJ energy class; from 2015 onwards it moved to the 8 MJ class.
Brake discs were internally ventilated carbon ceramic, the car had power steering, and four-point LED headlights were designed for night racing. Each subsequent season brought significant updates: the 2015 car shed weight with a one-piece chassis manufacturing process; the 2016 car introduced an 800-volt battery architecture; the 2017 version increased efficiency while reducing the engine's dry mass further.
Porsche entered two cars for six drivers: Timo Bernhard, Brendon Hartley, and Mark Webber in car 20, and Romain Dumas, Neel Jani, and Marc Lieb in car 14. The team faced reliability challenges in the early rounds but scored its first win at the season-closing 6 Hours of São Paulo, with Jani, Dumas, and Lieb taking victory. Porsche finished third in the Manufacturers' Championship with 193 points.
With a third 919 Hybrid entered for Earl Bamber, Nico Hülkenberg, and Nick Tandy at the 6 Hours of Spa and Le Mans, Porsche's pace grew decisive. Bamber, Hülkenberg, and Tandy took the team's first Le Mans victory since 1998, beating Audi. Bernhard, Hartley, and Webber won four races to claim the World Endurance Drivers' Championship. Porsche accumulated 344 points for the Manufacturers' title.
Jani, Lieb, and Dumas won at Le Mans after the leading Toyota TS050 suffered a mechanical failure near the finish, handing Porsche its 18th overall Le Mans win. Despite sharing the season with Audi, Porsche secured its second consecutive Manufacturers' and Drivers' Championships.
With Lieb and Dumas replaced by Andre Lotterer and Nick Tandy, and Webber retired, Porsche entered its final season. Bamber, Bernhard, and Hartley recovered from a 13-lap deficit caused by a front motor-generator replacement to win the 24 Hours of Le Mans and three further races. The team clinched both the Drivers' and Manufacturers' titles at the 6 Hours of Shanghai. At the season's end, Porsche announced its exit from LMP1 to join Formula E.
In April 2018 Porsche revealed the 919 Evo, a non-competition evolution of the 919 Hybrid freed from endurance-racing regulations. Fuel flow restrictions were removed, raising engine output to 720 hp, and the electric motor output increased to 440 hp, for a total exceeding 1,100 hp. Weight was reduced by 39 kg to 849 kg dry and aerodynamic downforce was increased by 53%. Neel Jani drove the Evo to a new overall lap record at Circuit de Spa-Francorchamps with a time of 1 minute 41.77 seconds, more than 12 seconds faster than the 919 Hybrid's 2017 pole time. Timo Bernhard set an all-time Nürburgring Nordschleife record of 5 minutes 19.546 seconds, breaking Stefan Bellof's mark of 6 minutes 11.13 seconds set in 1983.
The 919 Hybrid programme demonstrated that a hybrid powertrain combining a small-displacement turbocharged engine with dual energy-recovery systems could compete at — and dominate — the highest level of endurance racing. Porsche's three consecutive Le Mans wins from 2015 to 2017 confirmed the 919 as one of the most successful prototype racing cars of the modern era. Its engineering philosophy directly influenced the subsequent development of road-going hybrid performance cars and helped define the LMP1-H era of endurance racing.