1958 Jaguar Mark I 3.4 Saloon

The Jaguar 2.4 Litre Mark 1 is a British saloon car produced by Jaguar between 1955 and 1959. Referred to in contemporary company documentation as the Jaguar 2.4 Litre and Jaguar 3.4 Litre. Its designation Mark 1 followed its October 1959 replacement by Jaguar's 2.4-litre Mark 2. The 2.4 Litre was the company's first small saloon since the end of its 1½ and 2½ Litre cars in 1949, and was an immediate success, easily outselling the larger much more expensive Jaguar saloons. The 2.4 Litre saloon was announced on 28 September 1955. The 3.4 Litre saloon announced 17 months later in USA on 26 February 1957 was designed for the American market and was not at first freely available on the domestic market.

The Mark 1 was initially offered with a 2.4 Litre short-stroke version of the XK120's twin-cam six-cylinder engine, first rated at 112bhp nett by the factory at the launch in 1955. From February 1957 the larger and heavier 3.4 Litre 210bhp (gross) unit already used in the Jaguar Mark VIII also became available, largely in response to pressure from US Jaguar dealers. Wire wheels became available. The 3.4 had a larger front grille for better cooling, a stronger rear axle, and rear-wheel covers (spats) were cut away to accommodate the wire wheels' knock-off hubcaps. The 2.4 Litre was also given the larger grille. After 200 cars had been built and sent to USA and just prior to the car's announcement a major factory fire destroyed 3.4 Litre production facilities.

In September 1957 a three-speed Borg-Warner automatic transmission previously an export-only option became available with either engine and Dunlop disc brakes for all four wheels were made available as an optional extra on all Jaguar models except the Mark VIII saloon. 19,992 of the 2.4 and 17,405 of the 3.4 Litre versions were made.