Q&A: what are the new revelations about VW?

Hard on the heels of the diesel emissions scandal, Volkswagen has come forward with new data discrepancies relating to CO₂ levels

That is the implication of the oblique statement released by the German carmaker on Tuesday. VW said it found "irregularities" and "unexplained inconsistencies" in the levels of carbon dioxide emitted by its cars. It admitted that CO₂ levels and fuel consumption figures for some models were set too low during the testing process.