Background
When asked to name the most beautiful car of all time, many opt for the famous Jaguar E-type. We would not necessarily disagree, but many will be less familiar with the XK 120 from the same stable. If they were, they might change their mind. It’s a beauty!
Manufactured by Jaguar between 1948 and 1954, the XK 120 was the company’s first post-war sports car, succeeding the SS 100 which ceased production in 1940.
The XK 120 was first shown at the 1948 London Motor Show and you will not be surprised to read that it caused somewhat of a storm. The reaction to what was then more or less a prototype persuaded William Lyons to put the car into full production, a wise move.
Top speed was a heady 120mph, though apparently this could be increased if you removed the windscreen…
A little research reveals that the Observer Book of Automobiles claimed the 3.4-litre straight-six XK 120 to be the fastest production car in the world at the time.
Speed sells, even way back in the 1940s and Jaguar were clearly keen to demonstrate the car’s prowess. So, in May 1949, they arranged for a section of autobahn to be closed between Aeltre and Jabbeke in Belgium to allow for some testing.
Some might say there was an element of cheating involved, as the airflow was improved by the fitting of an aluminium undertray. Anyway, the Royal Automobile Club of Belgium recorded a top speed of 126mph through a flying mile.
Not content, a second run was organised, this time with the hood, side screens and windscreen removed, and a metal airflow deflector fitted in front of the driver. This resulted in a gain of 10mph on the top speed and one can imagine it was a hair-raising experience in more ways than one for the driver Ron Sutton.
The Motor Magazine also tested the XK 120 soon after launch and reported a 0-60mph sprint time of 10 seconds and around 19mpg. The price was £1,263 we are told.
A car to turn heads back in the day, but even more so now when sightings will be rare.







