Following the F1 in 1993 and the Mercedes-Benz SLR in 2005, the P1 is the third model in McLaren's "Ultimate Series" model range and the first one since McLaren Automotive's founding in 2010. Only 375 units were produced, with an additional 5 units being produced as part of the "Carbon Series".
Never before has Formula One technology been so integrated into the design and performance of a road car. The McLaren P1 touts KERS and DRS, both enabled by buttons on the steering wheel. Practical application of KERS gives the P1 176 additional horsepower that can be tapped to boost speed, increase overall output, or solely power the car up to 12 miles before needing to charge. This isn’t a car anyone is going to hyper-mile for a little savings at the pump, but it is a hybrid nonetheless. Coupled with 3.8-litre, twin-turbocharged, V-8, horsepower numbers exceed 900 with torque above 660 lb. ft. A seven-speed, dual-clutch transmission carries the P1 up to a stratospheric, electronically-limited, top speed of 217 mph. To bring the P1 back down to Earth, carbon-fiber braking by Akebono is precise. When given a chance to drive the P1 Sergio Perez said “when I first touch the brake it really feels like stopping a Formula One.” So your McLaren P1 should feel right at home the grand prix tracks of Forza Motorsport 6.
The McLaren P1 uses a specialized version of the McLaren MP4-12C's 3.8L (3,799 cc) twin-turbocharged V8 engine, with the new codename as M838TQ and the power output at 727 hp (542 kW) and torque output at 531 ft·lb (720 N·m). A new technology in supercars, however, is the addition of an electric motor for additional performance. In this case, the P1's V8 engine is paired with an in-house-developed electric motor that produces 176 hp (131 kW) and 192 ft·lb (260 N·m) of torque, giving out a total power output of 903 hp (673 kW) and a torque output of 723 ft·lb (980 N·m), although McLaren instead claims 664 ft·lb (900 N·m) in order to protect the gearbox. When the electric motor runs out of battery, the V8 engine activates and the battery self-recharges.
The car has a dry weight of 3075 lb (1395 kg) and a curb weight of 3411 lb (1547 kg). The resulting power-to-weight ratio is a minimum of 584 hp per tonne (3.41 lb/1.54 kg per hp) and a maximum of 647 hp per tonne (3.78 lb/1.54 kg per hp). Sending power to the rear wheels is a seven-speed McLaren SSG dual-clutch automatic gearbox like the one used in the 12C, but upgraded.
The McLaren P1 uses a seven-speed dual-clutch automatic transmission just like the one in the 12C, but improved. The car can do 0-60 mph (97 km/h) in 2.7 seconds, 0-124 mph (200 km/h) in 6.8 seconds, and 0-186 mph (300 km/h) in 16.5 seconds, a "full 15 seconds faster than the McLaren F1", as well as 0-200 mph (322 km/h) in 23.3 seconds. McLaren claims that the P1's top speed is electronically restricted to 217 mph (350 km/h). However, with the electronic limiter removed, the P1 has a top speed in excess of 245 mph (394 km/h), which is always reached or exceeded in the Forza games. At 160 mph (257 km/h), the P1 generates 1323 lb (600 kg) of downforce.
The McLaren P1 is currently the best-performing road-legal McLaren in the series, with a high-powered twin-turbo hybrid V8 powerplant paired with other Formula One technologies for maximum performance. Off the line, the P1 has tremendous acceleration, capable of reaching 100 mph (161 km/h) in 5.2 seconds, as well as being able to reach 200 mph (322 km/h) faster than most cars, making it one of the fastest-accelerating RWD cars in the series. This is partly due to the use of tight gear ratios. The P1's trick suspension and 1323 lb (600 kg) of downforce at 160 mph (257 km/h) enable fast cornering; in conjunction with the Drag Reduction System (DRS) that operates the rear wing and folds it up under heavy braking to decrease braking distances, the P1 gains a handy performance advantage over many cars. Outperforming its predecessor in all performance aspects, the P1 also has a very high top speed exceeding 246 mph (396 km/h), later increased to 255 mph (410 km/h) in Forza Horizon 3. Its closest competition includes the Ferrari LaFerrari, Porsche 918 Spyder, and Pagani Huayra BC.
In Forza Horizon 3, due to the P1's tight gearing, the car can benefit greatly from a top speed-oriented setup, which exploits wider gearing and subsequently yields a maximum top speed of 272 mph (438 km/h), which can then be increased even further to 295 mph (474 km/h) with the right gearing and the use of the Loop-the-Loop stunt track pieces in the Hot Wheels Expansion. In the same game, the car's braking performance was increased to outmatch that of the LaFerrari, which erroneously had better braking performance in previous games, contrary to real life.
Players must complete the P1 vs. the Nordschleife Rivals event and beat a lap time of 7:15 in order to get the P1 vs. the Nordschleife achievement.
Pre-release screenshots and videos of Forza Motorsport 5 depict a P1 with different hood vents (pictured in Gallery below).
Obtaining the P1 in Forza Horizon 2 Presents Fast & Furious unlocks the Just don't scratch it achievement.
In Forza Horizon 3, the P1's front bumper, carbon fiber exterior door inserts on the sides, rear engine cover, and rear bumper cannot be painted with any decals at all.
The P1's mirrors are permanently carbon fiber black and cannot be recolored, despite some real life examples of the car having differently colored mirrors.
The McLaren P1's active rear wing works differently in the games than in real life. It always stays up, even when the car is standing still. The wing also tilts to a 0° angle at 140 mph (225 km/h) and stays permanently up, even at speeds of over 230 mph (370 km/h).
Another example of this is when the player enters a Festival Hub in Forza Horizon 3 in the P1, the wing automatically retracts.
However, in Forzavista, the wing can be deployed and retracted.
The P1 comes with only orange and yellow as manufacturer colors, despite the large amount of colors the car can use in real life.
The McLaren P1's electric motor was later used in the Formula E SRT_01E electric formula race car.
Pre-Forza Motorsport 7 renditions of the P1 use a front weight distribution stat of 41%.
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