Germany's Volkswagen said Tuesday (3 November) an internal probe had found that 800,000 more vehicles showed "inconsistencies" on carbon dioxide emissions, including the first petrol engines.Among the engines affected are 1.4, 1.6 and 2.0 litre motors of VW, Skoda, Audi and Seat vehicles, said a VW spokesman, adding that these cars had been found to be releasing more of greenhouse gas CO2 than previous tests had shown.At least one petrol engine is concerned, the company said.