Volkswagen Group has 'largely concluded' its investigation into incorrect CO2 emissions figures stated for its vehicles, with nine models requiring adjustment.

The company said almost all of the model variants previously listed correspond to the CO2 figures originally determined, and require no changes - with the exception of nine.

The variants affected, all from the 2016 model year, consist of both petrol and diesel variants, with both manual and DSG gearboxes. Six of the nine models are available in the UK market.

The manufacturer said the build volume of models affected was low, amounting to around 36,000 vehicles a year, and the deviation amounted to a few grams of CO2 on average, corresponding to increased cycle consumption in the NEDC of approximately one to three miles per gallon.

The models will be formally remeasured under supervision before Christmas, with results released in due course.

The vehicles affected are:

Skoda and Audi have told Fleet News that none of its vehicles were affected. Details have not yet been released stating which, if any, Seat models are affected, although Volkswagen Group confirmed the investigation process was the same.

This investigation is separate to that investigated by authorities regarding incorrect NOx emissions on older EA189-engined diesel vehicles, which is still ongoing, with a rectification programme due to begin in January.