Renault has bought out the remaining stake held by Caterham in its Alpine business.

The manufacturer says that the arrangement has been made by mutual consent, and that the two companies could still work together in the future. This latest development brings to an end the Caterham-Alpine joint venture project which was signed off late in 2012. 

Renault says it still plans to launch its own sports car in 2016. Renault describes the new car as the "Berlinette of the 21st century", and says that 90 per cent of the design of the new car is complete, with an interior design set to be finished before the end of the summer.

The French firm reportedly confirmed earlier this year that the deal with Caterham would be axed, telling French union CGT that there would be no impact on the 300 jobs currently held at its Dieppe factory. The Clio RS is built there instead, and the site will still be the home of the Alpine brand in the future.

Problems between Renault and Caterham first surfaced at the beginning of this year, with insiders admitting to creative tensions between the two brands. The development of the Alpine car has also reportedly been delayed due to design changes, after an early prototype received mixed reviews at customer clinics.

The current launch date of 2016 is around a year later than first planned.

Caterham's design for its own sports car is believed to have been ready for some months, but as both cars were due to be launched together it's likely this contributed to the ending of the partnership. It's understood that the British company will continue to use the tech it has already developed with Renault for its own car. The company has admitted that there will be some job losses at its Norfolk-based tech centre as a result.

Caterham insiders are also refuting rumours that the firm has acquired beleagured German sports car maker Artega to make use of its mid-engined platform and production facilities. Caterham's finished car is expected to have around 300bhp available, while Renault's Alpine is tipped to have around 250bhp and a kerb weight of some 1100kg.

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