2021 Jaguar XJ mule spied

An engineering mule for the next-generation Jaguar XJ has been spied during cold weather testing in northern Europe. Given this mule uses panels from the current XF sedan, it doesn't provide us with a look at the final design of the new XJ, but we can tease out a few details about the new range-topping sedan. Thanks the XF-derived body panels, we can see the new XJ is a larger vehicle with a longer wheelbase and a wider track. It also features a faster roof line and a long bonnet.