Jaguar entered the motoring history books in 1961 with the gargantuan Mk X, Britains widest car, a record that it still holds even today. The massive Mk X was in many ways a tour-de-force for Jaguar incorporating many features unique for this size. Standard mechanical items included power steering, independent rear suspension, a limited slip diff' and of course the E-type 3.8 litre engine.
The Mk X came with a large four door saloon body built on a unitary construction floor pan (as opposed to the old Mk IX separate chassis), the car had a strange blend of Jaguar and American styling influences which looked bulky from some angles.
The 3.8 litre Mk X made way for 4.2 version in 1964, over 13,000 3.8 cars had been built by then.