Emissions statement

A full-hybrid diesel vehicle claims to have cut carbon emissions by 30 per cent compared to the standard showroom model. The prototype Citroën Berlingo Multispace emits just 99g/km of CO2 after being radically modified by Ricardo, with input from Qinetiq.

'The project has highlighted a range of technologies capable of delivering ultra-low CO2 without compromising vehicle function and performance,' said Ricardo's chief engineer Dave Greenwood.

The government-backed Efficient-C ultra-low carbon car project team used a 23kW motor supported by a 288V lithium-ion battery to boost fuel economy of the 1.6 litre common rail diesel to more than 75mpg. Automated manual transmission, regenerative braking and a starter-alternator allowing engine stop-start have helped to minimise fuel consumption.

Alain Klein, director of hybrid vehicle development at

, was optimistic about the achievement. 'We are delighted with the results which demonstrate the potential for a step change in CO2 emissions reduction with a diesel parallel hybrid,' he said.