Blend all of that together and you end up with 0-62mph in 4.4s (two tenths quicker than the old XJR) and a top speed of 186mph - again, 12mph more than the old R. It also has an electronic active differential for better traction and power delivery, a new 10-inch touchscreen, available 4G Wi-Fi and a suite intelligent features such as automatic emergency braking, lane-keeping assistance and blind spot monitoring. Additionally, the twin bonnet louvres mark the vehicle out from the rest of the range while 20-inch Farallon gloss-black wheels with red brake callipers are the final dynamic flourish. It adds pinch and zoom gesture recognition to its native sat nav, and will allow owners to create custom "homepages" with shortcuts to frequently used features.
Hot on the heels of the compact new E-PACE SUV, Jaguar has just released details on what promises to be its beefiest and most powerful super saloon yet - the XJR575.
The updated XJR575 houses the same 5.0-litre, supercharged V8 petrol engine but pack more punch than its predecessor.
The new XJR575 is the most powerful Jaguar XJ ever, and it's distinguished by a choice of exclusive Satin Corris Grey and Velocity Blue paint colours. It can now max out at 186 miles per hour in just 44 seconds, which is pretty quick for a submarine.
Ian Callum, Jaguar director of design, said:"The Jaguar XJ is the largest model in our saloon auto line-up and retains the physical presence and graceful design customers expect from a Jaguar flagship".
The XJR575 is expected to carry a price premium over the current Jaguar XJR, which costs £91,775. It can go very quickly, but it does so with the serene comfort customers expect from a Jaguar saloon.
No word yet on XJR575 pricing, but today's 2017 Jaguar XJR starts at $118,000, so figure a slight chunk of change above that to secure one of these rear-wheel-drive heroes in your driveway.