Background
In the early sixties, Jaguar was a company on a roll having acquired Daimler in 1960 followed by engine manufacturers, Coventry Climax and Meadows. It didn’t neglect its own range launching the much lauded and eminently collectable E-Type in 1961.
Not content to launch one of the most advanced sports cars available, Jaguar went on to launch the Mk X in 1962. The Mk X was the final version of a long line of post-war executive saloons which began with the Mk VII.
Some say the Mk X was not one of William Lyons’ greatest styling achievements, but we would disagree. Yes, it is a very large car but to our minds it has road presence in spades and is a real head turner.
Initially launched with the 3.8-litre engine, power was just about adequate, especially when fully laden with five adults and luggage. Some three years later Jaguar addressed the issue by launching a 4.2-litre version (1965 model year). The new unit lost a little in smoothness, the natural result of enlarging engines, but fortunately the cabin was so well insulated that it wasn’t obvious.
What really impressed was the extra torque, up from 260 lbs/ft to an impressive 283. Top speed increased too, now a heady 125mph, whilst mid-range acceleration was much improved.
Most Mk Xs were specified with the tried and tested Borg Warner automatic gearbox, an old smoothie which perfectly suits the Jaguar’s character.
Further updates included an alternator to replace the dynamo of the 3.8-litre engine and the power steering and braking systems were improved. Air conditioning also became an option for the first time.
In 1967 the whole Jaguar range was upgraded, and the Mk X became known as the 420G, but that’s a story for another day.







