The organization International Council on Clean Transportation (ICCT) is behind the survey, discussed in TU. They have compared the emissions of “reality the world” with the official results from the standardized European driving test NEDC used for type approval.
The study shows that cars that were examined on average emitted 40 percent more CO2 than was stated. According ICCT a third of the difference is explained by the automakers exploit weaknesses in how the official NEDC test is set up. Within certain limits, it is up to the manufacturers how the test should be performed, but the framework allows for interpretation.
“There are incentives for manufacturers to utilize certain tolerances and undefined theme to minimize official guide and CO2 emissions “writes ICCT report. Guiding shows including the rolling resistance in which the test is performed.
Next year introduced a new standard for emissions measurement, and it will, according to the organization provide more realistic emission figures. (© NTB)