> I seriously doubt diesels were ever bought to "lower their CO2 emissions". At no point in time there was ever doubt that diesels were the more polluting opti

> I seriously doubt diesels were ever bought to "lower their CO2 emissions". At no point in time there was ever doubt that diesels were the more polluting option. That's two entirely independent statements. VW Diesels do produce lower CO2 emissions. But when building an engine, there's a tradeoff: the leaner it burns, the lower the CO2 emissions and the higher the NOx emissions. The Diesel scandal was about NOx.