The Huayra uses a twin-turbo Mercedes-AMG 60° V-12 engine. The Huayra's 6.0-litre engine, the M158, produces 730 metric horsepower (720 bhp (539 kW)) and 1,000 N·m (740 lb·ft) of torque. Its top speed is about 231 mph (372 km/h) and it has a 0-60 miles per hour (0-97 km/h) time of 3.3 seconds.[1] Using Pirelli tires, the Pagani Huayra is capable of withstanding 1.66 g of lateral acceleration at speeds of up to 230 mph (370 km/h).
The Pagani Huayra uses a seven-speed sequential gearbox and a single disc clutch. The choice not to use a dual-clutch in an oil bath was due to the increase in weight of over 70 kg (154 lb), negating the advantage of the faster gear changes in those transmissions. As a result, the entire transmission weighs 96 kg (212 lb).
The car is equipped with bespoke Brembo brake calipers, rotors and pads. The calipers have six pistons in front and four in the rear. The rotors are drilled carbon ceramic, 380 mm (15.0 in) in diameter and 34 mm (1.3 in) thick. There are also four independent flaps which can act as air brakes or produce downforce.
The Pagani Huayra is different from its predecessor in that it incorporates active aerodynamics.cIt is capable of changing the height of the front from the ground and independently operating four flaps placed at the rear and front of the car. The behavior of the flaps is managed by a dedicated control unit that is fed information from systems such as the ABS and ECU, which pass on information about the car's speed, yaw rate, lateral acceleration, steering angle and throttle position. This is intended to achieve minimal drag coefficient or maximum downforce depending on the situation. The Huayra's designer Horacio Pagani states that it has a variable drag coefficient of between .31 to .37. The system also prevents excess body roll in the corners by raising the "inside" flaps (i.e. the left ones in a left-handed corner and vice-versa), increasing the downforce on that side of the car. The rear flaps also act as an airbrake. Under hard braking, both the front suspension and the two rear flaps are raised to counteract weight transfer to the front wheels and keep the whole car very stable, for instance when entering a corner. Air from the radiator is extracted through an arch in the bonnet at an angle that is designed not to affect the streamline around the body. The side air intakes behind the front wheels create a low pressure zone, resulting in downforce.
