FORD is ending production of the ultra-hot Focus RS with a limited run of 50 Heritage Edition models which also mark the golden jubilee of the RS marque.

The specials, which come in a deep orange paint finish, will be priced from £39,985.

Production of the current Focus RS is due to end on April 6 and the Heritage cars will mark the end of a three year run at Ford's Saarlouis factory in Germany.

With its 350ps 2.3-litre turbo engine and all-wheel-drive the RS has become a favourite with fast Ford fans and with a 0 to 60 performance of 4.7 seconds and a top end of 165mph it is the fastest production RS so far.

The Heritage Edition also marks the 50th anniversary of the first RS models which date back to the days of the Ford Escort.

As well as their distinctive orange paint jobs, the last models have grey brake callipers behind black forged alloy wheels and the RS Edition's trademark contrasting black door mirrors and rear spoiler.

Inside the cars are fitted with partial leather Recaro seats, privacy glass, a sunroof, rear parking sensors, power-fold door mirrors, cruise control with speed limiter and heated steering wheel.

With a Quaife limited-slip differential for heightened dynamics, the Heritage Edition also has a dealer-fitted FPM375 Mountune upgrade, increasing overboost power to 375p, and torque from 470Nm to 510Nm.

Andy Barratt, chairman and managing director, Ford of Britain, said: "The RS brand is hugely important to Ford and is recognised across the globe, however it has a special place in the hearts of UK Ford fans. This latest model is the best RS we've ever produced, so it seems a fitting tribute as we approach its 50th anniversary."