The Jensen FF introduced anti-lock braking to a production road car in 1966.
Jensen Motors built the FF as a technically advanced version of the Jensen Interceptor. The initials stood for Ferguson Formula, referring to its four-wheel-drive system developed with Harry Ferguson Research. The car also used Dunlop Maxaret anti-lock braking, adapted from aviation technology.
The FF was launched in 1966 and became the first production automobile equipped with four-wheel drive and an anti-lock braking system. Its braking technology helped prevent wheel lock during hard braking, allowing the driver to retain more steering control on slippery surfaces. At the time, this equipment was expensive and complex compared with conventional hydraulic brakes.
The Jensen FF should not be confused with later cars that made ABS widely available. Mercedes-Benz and other manufacturers eventually refined electronic systems and introduced them across broader model ranges. Jensen’s system was an early mechanical design, and the FF’s limited production meant that few motorists encountered it.