Plug-in hybrids pollute almost as much as petrol cars, report finds - Analysis of 800,000 European cars found real-world pollution from plug-in hybrids nearly five times greater than lab tests

Data shows PHEVs emit just 19% less CO2 than petrol and diesel cars, an analysis by the non-profit advocacy group Transport and Environment found on Thursday. Under laboratory tests, they were assumed to be 75% less polluting.