McLaren launched the P1 GTR at the 2015 Geneva Motor Show to celebrate the 20th anniversary of the McLaren F1 GTR’s victory at the 1995 24 Hours of Le Mans. All available build slots were offered exclusively to the 385 owners of the roadgoing McLaren P1. In a similar vein to the Ferrari FXX program, the P1 GTR was designed from the outset to be the ultimate expression of the P1, honed and perfected for its owners to enjoy on the racetrack, free from any constrictions imposed by making a car legal for the road. Owners were given access to McLaren technicians and engineers at driving events, as well as McLaren’s own racing simulators and driver fitness team.

True to the company’s engineering ethos, the P1 GTR’s enhanced performance is built upon small changes that together create a large effect—it is seven seconds faster than the P1 around the Losail International Circuit.

The engine is the same 3.8-liter V-8 featuring twin turbochargers and aided by a powerful electric motor whose prodigious torque eliminates any form of lag while the turbos are off boost or spooling up. In the P1 road car, the engine produced 903 brake horsepower, but for the GTR, it was enhanced with items such as a high-flow titanium and Inconel exhaust system to liberate an extra 83 brake horsepower, bringing total output to 986 brake horsepower or 1,000 PS—a figure almost identical to a Bugatti Veyron's. Where the Veyron and the P1 GTR differ is weight; the McLaren is over 1,000 pounds lighter, giving it a far better power-to-weight ratio. Importantly, the McLaren engineers employed the same seven-speed dual-clutch transmission as that found in the roadgoing P1, which helps make the P1 GTR very approachable on the track, even for less experienced drivers.

Removing the constraints of road use also allowed improvements to the chassis and aerodynamics. While the two cars share the same Monocage carbon fiber substructure, the GTR forgoes the heavier active suspension of the road car and employs a fixed racing setup. Lightweight wheels shod in slick Pirelli tires not only reduce un-sprung weight, but also considerably increase traction and grip, while a fixed, full-width, rear wing gives the GTR increased downforce by 10 percent over the standard P1. Even the wing mirrors were relocated from the doors onto the A-pillars in pursuit of aerodynamic efficiency and improved visibility.

The cockpit is familiar, albeit with a sharp focus on further weight savings and track use. An exercise in the pursuit of lightness, it features a single, fixed, carbon fiber bucket seat, a six-point harness, and a steering wheel modeled after the one used by Lewis Hamilton to win the 2008 Formula One World Drivers’ Championship. All these changes together save over 110 pounds versus the roadgoing P1, despite the addition of a car-to-pits radio, fire extinguishing system, and onboard air jacking system.

This P1 GTR is number 23 of only 58 produced and is being offered for the first time from its original owner. Finished in brilliant Burton Blue with a contrasting white stripe, it remains in excellent condition overall, showing only 5,139 kilometers (3,193 miles) on the odometer at cataloguing time. The owner enjoyed the car on various private track days at renowned racing venues around the globe as part of the company’s exclusive P1 GTR program run by McLaren with its full technical team supporting each event. A service record on file from McLaren indicates fastidious maintenance with the P1 GTR receiving a new hybrid drive assembly and clutch in August 2016. A new front left suspension assembly, rear driveshafts, and rear left damper were installed in September 2016 following an incident at Circuit Paul Ricard. The car also received new fuel tank seals in July 2017, a new rear rebound accumulator in March 2017 and again in February 2018, a new vacuum pump in May 2021, and a fresh 12-volt battery in January 2025.

Accompanied by its original sales invoice, this McLaren P1 GTR is unequivocally one of the most exciting cars built thus far in the 21st century and, given its extreme rarity and exclusivity, will be of immeasurable interest to marque enthusiasts and supercar devotees—particularly those wishing to take full advantage of its capabilities on the racetrack, as McLaren intended when engineering this masterpiece.