French car maker Citroen is encouraging buyers to drive away in one of 10 models that emit less than 100g/km CO2.

From the full-electric C-Zero city car to the C4 hatchback, drivers can take advantage of both the financial and environmental benefits of owning a new, sub-100g/km car.

Joining the French firm's existing ultra-low line-up are three new C3 models with a e-HDi 90 micro-hybrid powertrain, including second-generation Stop & Start.

One of the new e-HDi models boasts CO2 emissions of as low as 93g/km, with two others at 98g/km. Fuel economy is 78.5mpg and 76.3mpg respectively.

The C3 HDi 70 manual VT has been officially retested and now offers more efficient fuel consumption and lower emissions. CO2 output reduces from 112g/km to 99g/km with improved fuel economy of 74.3mpg over a combined cycle, up from 65.7mpg.

The family sized C4 e-HDi 110 Airdream VTR+ is also rehomologated, with sub-100g/km emissions thanks to a new Aerodynamic Pack and Michelin Energy Saver tyres with ultra-low rolling resistance.

These measures reduce CO2 emissions from 109g/km to 98g/km - one of the lowest for a vehicle in this class.