Volkswagen has admitted that it manipulated the carbon dioxide emission levels of more petrol-powered vehicles than previously disclosed.
In a statement issued after business hours on Friday, the German carmaker said it had also identified "implausible CO2 levels" in 24 models VW group vehicles with petrol engines. These vehicles include the 1.2 litre VW Jetta and the 2.0 litre VW Passat.
The revelations about fuel economy and CO2 emissions have deepened the crisis at the Volkswagen group, who are expecting costs of at least $2.1 billion linked to these issues. The group has also set aside $7.1 billion to help cover costs related to the vehicle recalls.
The scandal initially centred on software used on up to 11 million diesel vehicles worldwide to hide emission levels of the pollutant nitrogen oxide.