Ligier JS P217

Lore & Background

The Ligier JS P217 was conceived in 2016 in preparation for the FIA and ACO's new regulation changes for 2017. Onroak Automotive built a brand new chassis from scratch, focusing on improving the mechanics over the earlier Ligier JS P2. Development concentrated on air cooling of the engine radiators and brakes, cockpit air conditioning, a new axle/nut/rim system to reduce tire-change time, axle efficiency, weight distribution, front-cockpit mechanic accessibility, aerodynamic efficiency, LMP1-style power steering, and a limited number of chassis pieces. Driver comfort, space, controls accessibility, and visibility were also emphasized.

The car was publicly unveiled at Spa-Francorchamps in September 2016, and performed tests at Magny-Cours in September 2016 and at Daytona International Speedway in November 2016 in preparation for the 24 Hours of Daytona. A variation called the Nissan Onroak DPi (or Ligier Nissan DPi) was created for IMSA's WeatherTech SportsCar Championship under DPi regulations, developed with Nissan and Nismo. It used a 3.8-litre V6 twin-turbo engine from the Nissan GT-R GT3, along with a large front panel and revised side panels. Tequila Patrón ESM ran two DPis until closing in late 2018; CORE Autosport purchased them for the 2019 season, but the program ended after team owner Jon Bennett retired.

In 2021, Ligier revealed the JS PX, an unrestricted track-day special based on the JS P217. It uses a 3.8-litre V6 twin-turbo engine developed to 825 hp, with chassis, suspension, and transmission identical to the P217, but with optimized ABS, TC, and ECU systems using input from Olivier Pla. The PX features a large front panel similar to the Nissan DPi, with an extended nose and a copycat element underneath, while retaining single canards per side (unlike the DPi's dual-canard setup). The car appeared as the main protagonist's Le Mans entry in the 2023 film Gran Turismo, with a racing livery featuring PlayStation and NISMO sponsorship.

Reader's Guide

The Ligier JS P217 represents a significant step in LMP2 design under the 2017 regulatory framework, built from a clean-sheet chassis by Onroak Automotive. Its development priorities—mechanical efficiency, driver ergonomics, and aerodynamic refinement—reflected the demands of both the FIA World Endurance Championship and IMSA WeatherTech SportsCar Championship, where it competed successfully. The car's adaptability is demonstrated by the Nissan Onroak DPi variant, which adapted the platform for IMSA's DPi rules with a Nissan GT-R-derived engine and revised bodywork, and by the later Ligier JS PX track-day special, which pushed the concept to higher power levels for non-competitive use. The JS P217's presence in multiple series—WEC, ELMS, Asian Le Mans Series, and IMSA—underscores its versatility and the broad adoption of the design by privateer teams. Its appearance in the 2023 film Gran Turismo, as the car driven by the protagonist at Le Mans, further cemented its cultural footprint beyond motorsport. The car's legacy is tied to Onroak's engineering approach, which balanced performance with serviceability, and to the partnership with Guy Ligier's name, which continued a lineage of French prototype racing.