Foreign Affairs
Plug-in hybrids pollute much more than advertised – environmental groups

A study carried out by environmental groups says plug-in hybrid vehicles pollute two and a half times as much as is being advertised by their manufacturing companies.

Laboratory tests quoted by the industry say carbon dioxide emissions from these vehicles are 44g/km. Transport and Environment authorities and Greenpeace state, however, that in fact, the emissions are closer to 120g/km.

Plug-in hybrids run on an electric engine using a battery which is charged when plugged into electricity, or when the diesel or petrol engine is running.

The plug-in hybrids, known also as PHEVs, presently account for some 3% of sales of new cars.