The McLaren MP4-12C is a sports car designed and manufactured by McLaren Automotive. It is the first production car wholly designed and built by McLaren since the McLaren F1 in 1998. The car's final design was unveiled in September 2009, and was launched in 2011. The MP4-12C features a carbon fibre composite chassis, and is powered by a mid-mounted McLaren M838T 3.8-litre V8, twin-turbo engine developing approximately 616 bhp and around 443 lb·ft of torque. The car makes use of Formula 1-sourced technologies such as "brake steer", where the inside rear wheel is braked during fast cornering to reduce understeer. Power is transmitted to the wheels through a seven-speed Seamless Shift dual-clutch gearbox.