New models of diesel and petrol cars will have to pass a strict new emissions test before they are allowed on Britain’s roads from September.
Under the old test, vehicles were tested in the lab on a rolling road but now they will have a 90-minute real world driving test.
The limits are being introduced under European-wide reforms that the British government has led the way in calling for.
Transport minister, Paul Maynard said: “We are taking strong action to clean up our air and these tough new emissions standards will reduce dangerous pollutants.
“This will ensure all vehicles meet rigorous standards when driven on our roads – and we are going even further tightening requirements again in 2020.”
The government’s diesel testing programme last year found that today’s Euro 6 diesel cars were emitting six times more nitrogen dioxide in the real world than in the lab.
Under the reforms, now they will have to slash those emissions by two thirds.
The new test is also designed to stop car manufacturers cheating on the emissions test.
During the 90-minute test vehicles will have emissions testing equipment attached to the exhaust pipe, and they must pass before they are approved to go on sale in Britain.
The Department for Transport (DfT) has also recently set up a market surveillance unit, which tests a random sample of vehicles already on the road to make sure they meet emissions standards.
GW understands that the department is continuing to work on new methods of DPF detection for use during the MOT.
In a statement obtained by GW, a DfT spokesperson said: “Alternative methods of detecting the presence of particulate filters are under development and we are examining their suitability for use in an MOT.
“Further research is required to ensure potential methods accurately determine a pass or fail.”
Do you think enough is being done to crackdown on the emissions of vehicles already on our roads? Share your comments and experiences below.