United Kingdom · British launch specification · Earls Court Motor Show, October 1966

Jensen FF Mk I

A huge American V8, permanent four-wheel drive and aircraft-inspired anti-lock brakes made this hand-built British GT astonishingly advanced.

Safety and drivetrain pioneers

Exterior · Photo shows Exact FF Mk I model photographed as a 1967 car, one model year later than the 1966 launch profile; right-hand drive, Chrysler 383 and TorqueFlite specification are not all visible.. Exact FF Mk I model photographed as a 1967 car, one model year later than the 1966 launch profile; right-hand drive, Chrysler 383 and TorqueFlite specification are not all visible.
1967 Jensen FF Mk I coupe · Sicnag · CC BY 2.0

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A matching completed auction sale has not been verified for this exact year, body, trim, engine, transmission and market.

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A place in vehicle history

More than a set of wheels.

Jensen and Harry Ferguson Research had worked on four-wheel drive since 1962. At the 1966 Earls Court show, Jensen launched the Italian-styled Interceptor and the related but mechanically different FF. Its name means Ferguson Formula. The FF's full-time four-wheel drive and Dunlop Maxaret anti-lock braking arrived years before those ideas became common in road cars, yet just 320 were built through 1971.

Look a little closer.

The easiest outside clue is the pair of diagonal vents behind each front wheel; the rear-drive Interceptor normally has only one.

Photos show an example of the model or generation. The pictured vehicle’s year, equipment, or modifications can differ from the specification described here.

Four-wheel drive without turning it into a truck

The FF used three differentials so its wheels could rotate at different speeds through bends while all remained driven. Rear-biased torque preserved a sporty feel. Jensen lengthened the wheelbase and enlarged the transmission tunnel to fit the front propshaft, transfer box and center differential, so an FF is not simply an Interceptor with extra badges.

Source: Jensen Owners' Club · Jensen FF ↗

An early answer to skidding

Dunlop's Maxaret system came from aircraft practice. In the FF it compared front and rear wheel speeds and altered vacuum assistance when it detected a mismatch, creating pedal pulses as grip returned. It is an important ancestor of modern ABS, but its mechanical logic and sensing were far simpler than today's electronic wheel-by-wheel systems.

Source: Jensen FF brochure · four-wheel drive and Maxaret ↗

Where these facts come from

Selected facts checked for this edition. Some source pages link to broader model families. Last reviewed September 30, 2026.

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