The McLaren Senna is a limited-production mid-engine sports car manufactured by McLaren Automotive. The car is the third addition in the McLaren Ultimate Series, joining the F1 and the P1; however, it is not a direct successor to either of the cars. The Senna was unveiled online by the company on December 10, 2017, with the official unveiling taking place at the 2018 Geneva Motor Show. The car is named after the Brazilian Formula One race driver Ayrton Senna, honouring and giving tribute to his success with the McLaren Formula One Team between 1988 and 1993 Formula 1 seasons. Senna won three Formula One World Driver's Championship titles and thirty-five Formula One Grand Prix race wins with the team; McLaren also won four consecutive Formula One World Constructor's Championship titles with Senna as part of their driver line-up. McLaren Automotive holds the rights to the Senna family name along with the Instituto Ayrton Senna. The organisation and McLaren have made the Senna name exclusive to the car, thereby prohibiting any other company from using the name. McLaren's main focus while designing the Senna was to achieve faster lap times. In order to do so, McLaren developed a lightweight design that incorporated aerodynamic elements. The Senna is largely based on the McLaren720S, using a modified version of its carbon fibre monocoque and engine. The Senna is powered by a modified version of the McLaren 720S' 3, 994 cc (4.0 L; 243.7 cu in) twin-turbocharged V8 engine codenamed the M840TR. It utilises a seven-speed dual-clutch transmission that delivers all 800 PS (588 kW; 789 hp) at 7, 250 rpm and 590 lb⋅ft (800 N⋅m) of torque at 5, 500 rpm to the rear wheels. Unlike the previous offering in the Ultimate Series, the P1, the Senna does not use an electric motor in favour of its low claimed dry weight of 1, 198 kg (2, 641 lb), which allows for a maximum power-to-weight ratio of 667 PS (491 kW; 658 hp) per ton.
