Citroën’s flagship DS5 is now more efficient and environmentally considerate than ever. All three Hybrid4 200 Airdream EGS6 models in the DS5 range have received technical updates to deliver CO2 emissions from just 91g/km with improved fuel economy.

New management software has been developed for the full-hybrid diesel powertrain with a number of technical improvements to optimise DS5’s efficiency. Key enhancements include improved energy recovery when decelerating and braking, and a new battery management system.

On sale now, the newly re-homologated DS5 Hybrid4 drivetrain reduces the official CO2 emissions for the DSign model from 99g/km to 91g/km (BIK tax band 10%). DStyle and DSport versions see their emissions reduce from 107g/km to 102g/km, with a BIK band change from 12% to 11%.

As previously announced in July, 17-inch ‘Houston’ alloy wheels are available as a no-cost option on Hybrid4 DStyle and DSport versions. These smaller diameter alloy wheels reduce the cars’ CO2 emissions from 102g/km to 91g/km – the same as the entry-level DSign (giving a further BIK reduction from 11% to 10%).