The Jaguar XFR Speed Pack features a speed limiter raised to 174mph (280km/h), the 510PS car is equipped with revised engine and gearbox calibration to match the increased top speed. A new front aero splitter and a new rear wing distinguish the Speed Pack car.
The 510PS XFR sports saloon benefits from the same combination of eight-speed automatic gearbox and Intelligent Stop/Start allowing it to offer an unrivalled blend of efficiency and excitement. The EU Combined cycle improves by 11% with its emissions reduced by more than 8%.
Source: Jaguar Press Release