First seen in camouflaged guise going up the hill at last month’s Goodwood Festival of Speed, the XJR575 uses the F-Type SVR’s 5.0-litre V8 supercharged engine with 567bhp, 25bhp more than the outgoing XJR, and 516lb ft.
That enables a 0-62mph time of 4.4sec, 0.2sec faster than its predecessor but 0.2sec slower than the S63. Its top speed is 186mph.
The hot saloon is part of the updates across the XJ range that come as a mid-life refresh, ahead of a new XJ in 2019. That model is widely rumoured to be pure electric. If true, Jaguar would beat its rivals to having a battery-powered flagship saloon and target core markets such as China.
In the meantime, this new XJR575, available in standard wheelbase only, has tailor-made exterior details, including a rear spoiler, side sills, front bumper and lower air intakes with gloss black surrounds. XJR575 badging and twin bonnet louvres plus 20in gloss black wheels with red brake calipers distinguish the car from its standard XJ siblings. Inside, the model has embossed tread plates, 575 branding and diamond quilted seating in two colour options.