New laboratory tests to measure CO2 from cars and vans will “reduce but not eliminate” the gap between real world and test condition emissions and will need to be updated and reinforced with on-road checks, scientific advisers have told the European Commission.
The Scientific Advice Mechanism group (SAM), set up by the Commission in 2015 to provide information for policy decisions, raised concerns about the increasing gap between the two types of emission results for light-duty vehicles such as cars and vans last week. Researchers say that the gap between the emission readings can be as much as 20% to 50% depending on the vehicle model.
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