European Union is preparing to introduce a legislation that will ensure that vehicle fuel use testing on the roads instead of laboratories, to prevent car makers making exaggerated claims on fuel-savings and emission credentials.
Lab techniques used to test carbon dioxide emission including taping up of car doors and windows, and driving on a smooth surface, but those techniques do not provide accurate results.
An EU executive highlighted that nitrogen oxide emission is much higher than estimated, and under the new testing regime which is expected to be introduced starting 1st September, diesel powered cars will only be allowed to emit 0.08 gram of nitrogen.
The European Union has the world's toughest limits on carbon dioxide, but according to car industries in Europe the systems and techniques used by the commission has flaws.
By bringing the testing process to the road, EU is be attempting to fill the gaps in the testing system, according to Reuters.
