The McLaren P1 leverages five decades of McLaren’s motorsport skills. It was designed from the outset to prioritise aerodynamic performance and spent many hours in a wind tunnel and using CFD (computational fluid dynamics) aerodynamic modelling – just like a Formula One car.
The new McLaren P1 has much higher levels of downforce than any current road car – 600kg is achieved well below maximum speed. That is approximately five times as much downforce as a McLaren 12C. Its margin over most other high performance supercars is even greater. The McLaren P1’s downforce is similar to current sports racing cars, including the 12C GT3 racer.
The large rear wing adjusts automatically to boost downforce and optimise aerodynamics. It can extend rearwards by up to 300mm on a racetrack, and by up to 120mm on the road. The pitch of the rear wing can increase by up to 29 degrees. The double element rear wing profile has been developed using exactly the same methods and software as the current McLaren Formula 1 car.
The McLaren P1 also has a DRS (drag reduction system) function, like a Grand Prix car, to reduce downforce and increase straight line speed. But while a Formula 1 car has a moveable flap in the rear wing, the McLaren P1’s rear wing’s pitch is adjusted.
As with the legendary McLaren F1 road car of 1992, the McLaren P1 is a mid-engine design that uses a carbon fibre monocoque and roof structure safety cage concept called MonoCage which is a development of the MonoCell used in the current 12C and 12C Spider. The structure of the MonoCage, unlike the 12C’s MonoCell, also serves to guide air into the engine through an integral roof snorkel and air intake ducts, saving further weight. All the body panels are carbon fibre to reduce weight. This carries on a McLaren innovation: it was the first company to offer a full carbon body Grand Prix car (in 1981) and the first to offer a full carbon body road car (the F1).
The McLaren P1 makes its debut at the Paris Motor Show on the first press day, September 27. Further details – including its powertrain and other technical information – will be announced early in 2013, shortly before sales begin. Deliveries are expected to commence in late 2013, the year of McLaren’s 50th anniversary.