1953 Jaguar Mark VII
he Mark VII chassis came from the Jaguar Mark V and the wheelbase remained the same at (10 feet (3,048.0 mm)). The new model's body looked more streamlined, with integrated headlights and mudguards, a two-piece windscreen, and longer rear overhang. As on the Mark V, the rear wheels were partially covered by removable spats.
Whereas the Mark V had a prewar engine originally developed by the Standard Motor Company, the Mark VII was powered by the newly developed XK engine. First seen in production form in the 1948 XK120, the 3442 cc straight-six provided 160 bhp (119.3 kW), the same as in the XK120, and the saloon's claimed top speed was over 100 mph (160 km/h).
When the car was being developed Jaguar thought it would find most of its customers overseas, mainly because UK car tax at that time penalised buyers of larger-engined cars. However it went into production just as Britain's postwar economic austerity began to ease, and in 1951 the car's enthusiastic reception in both the British and American markets prompted Jaguar to relocate production to larger premises, at the Browns Lane plant, which had been built for wartime production as a shadow factory and was now available for immediate use.
The published performance figures for the Mark VII were based on the standard 8:1 compression ratio, but as this was unsuitable for the UK market's low-octane Pool petrol a 7:1 engine was optional. British motoring magazines tested the car's performance with the higher compression ratio, using the Ostend to Brussels autoroute in Belgium, where 80 octane fuel was available. A Mark VII tested by The Motor in 1952 had a top speed of 101 mph (163 km/h), accelerated from 0–60 mph (97 km/h) in 13.7 seconds and returned 17.6 miles per imperial gallon (16.1 L/100 km; 14.7 mpg-US). The test car cost £1693 including taxes.
By the time the Mark VII was upgraded to M specification in 1954, 20,908 had been produced.