The Jensen FF is a four-wheel drive grand tourer produced by British car manufacturer Jensen Motors between 1966 and 1971. It was the first non all-terrain production car equipped with four-wheel drive and an anti-lock braking system. The powertrain was sourced from Chrysler, installing the second generation V8 engine and 3-speed TorqueFlite A727 automatic transmission. The use of four-wheel drive in a passenger car preceded the successful AMC Eagle by thirteen years, the Audi Quattro by fourteen years, and the Subaru Leone by five years. The Dunlop Maxaret mechanical anti-lock braking system had previously been used only on aircraft, lorries, and racing cars. An experimental version was first fitted to the earlier Jensen C-V8, but this did not go into production. The letters FF stand for Ferguson Formula, after Ferguson Research Ltd., who invented the car's four-wheel drive system. The FF is related to the similar-looking, rear-wheel drive Jensen Interceptor, but is longer, and mechanically very different. Standard FF features included front seat belts, a tachometer, and map pockets. Reception and sales Although it was a highly innovative vehicle in a technical sense, the FF was not commercially successful. Its price was high — about 30% higher than the Jensen Interceptor, and more than that of luxury GTs from much more prestigious makers. In the UK a reputed 320 to 330 examples of the Jensen FF V8 model were made by Jensen Motors Limited according to The Jensen Owners Club. The FF also suffered from a design problem, and not one easily cured: the system was set up for a driver in the right-hand seat, and no considerations had been made to making it left-hand drive. In particular, the central transfer case and both propeller shafts protruded into the left-hand seat space. The steering gear and brake servo were fitted on the right-hand side, and there was no space for them on the left. By the early 1970s, Jensen's primary markets were in overseas markets where cars were driven on the right-hand side of the road. The FF could not be sold in the United States. Appearance The FF may be distinguished from the Interceptor by a few styling cues, the most obvious being the twin (rather than single) diagonal air vents on the front wing, just rear of the wheel-arches. The frontal appearance was revised in September 1968. Only coupés were made; there were no convertibles. Derivatives One experimental