Citroën is offering smaller wheel options on high specification versions of the DS5 Hybrid4 to expand the number of vehicles capable of less than 100g/km.

From 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 107g/km to 99g/km - the same as the entry-level DSign Hybrid4 model. At 99g/km both models are exempt from the London congestion charge and the BIK tax rate reduces from 12 to 10%.

Citroën has also confirmed two new Signature packs for DS5 HDi 160 DStyle and DSport models. The Sport Signature and Dark Sport Signature packs are priced at £650 and bring lowered suspension (by 7mm), black door mirrors and grey or black 19-inch Cairns alloy wheels for the Sport Signature and Dark Sport Signature respectively.

On all DS5 THP 200 versions, the striking Dark Sport Signature is now specified as standard - at no extra cost - with the Sport Signature pack available as an alternative no-cost option.

The DS5’s e-HDi 110 Airdream EGS6 powertrain has been renamed e-HDi 115 Airdream EGS6 to reflect an increase in power from 111hp to 114hp. The drivetrain’s performance figures, fuel consumption and CO2 emissions are unaffected.