Background
Like many car makers in the early years of the 20th century, the Bradford-based Jowett brothers started out as a bicycle company. After making V-twin engines for their bikes they soon began experimenting with motor cars, producing their first light car prototype in 1906.
Fast-forward a few decades and the firm’s Javelin saloon was successful enough to persuade the firm to use it as the basis for a more overtly sporting model. The Jupiter was the result, launching in 1950 as the Jowett Javelin Jupiter, although, like so many of us, it soon dropped its middle name.
The aluminium bodywork, which is set over a molybdenum tubular steel frame, was initially farmed out to folk like Ghia and Farina but the prohibitive cost forced the firm to bring the whole operation in-house.
The 1.5-litre engine of the MKI cars develops 60bhp (The MKIa, introduced in late 1952, develops 3bhp more) enough to give the Jupiter a top speed of 85mph after passing 50mph in just under 12 seconds, both of which were more than respectable and led toThe Autocar remarking on the "well-known ... verve of the Javelin engine".
It also competed in the 24 Hours of Le Mans race, where it took class wins in 1950, 1951, and 1952, as well as the Monte Carlo Rally.
The company was profitable but the purchase of Briggs (who made the Javelin’s body for Jowett) by Ford hampered production. This, along with external market factors and internal squabbles, led to Jowett’s board winding up the company in 1954.







