Citroen DS5 Hybrid4 models are now cleaner and more efficient, thanks to a range of tweaks to the hybrid drivetrain's management software.
Citroen has updated all three Hybrid4 200 Airdream EGS6 models to improve average fuel economy and drop CO2 emissions as low as 91g/km for the DSign model, while DStyle and DSport versions drop from 107g/km to 102g/km.
Company car tax remains at 10% for Hybrid4 DSign models, but DStyle and DSport versions drop from 12% to 11%.
The efficiency gains come as result of new software developed to improve the car's brake energy recuperation system, along with a new battery management set-up.
All Citroen DS5 Hybrid4 models benefit from increased efficiency
Buyers can also specify 17-inch wheels as a no-cost option on Hybrid4 DStyle and DSport cars, with the smaller-diameter alloys reducing CO2 emissions to 91g/km the same as DSign cars and also cutting company car tax to 10%.
The tweaked cars are on sale now, with prices starting at 27,600 for the Hybrid4 DSign version.