grpe-efv-02-03 environmentally friendly vehicle (efv)
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Fig. 3.2.3.1-.3: Rating of CO2 and vehicle classes. In contrast to the class depending CO2-rating the assessment of the limited pollutants (CO, HC, NOX and PM) is independent of vehicle classes. Unlike in the emission legislation the same criteria and emission levels are applied to gasoline, diesel, natural gas and hybrid power trains. 
Fig. 3.2.3.1-4: Assessment of pollutants and vehicle classes. The rating is calculated on the basis of the performance in the NEDC cold and ADAC highway cycle. The worst results in each cycle define the pollution rating. For all cars – regardless of whether a petrol or diesel engine, with or without direct injection system – the same rating formula is applied. Although conventional petrol engines have no particle emissions detectable. by gravimetric measurement no problem emerges with this formula. As a direct consequence of the formula conventional petrol vehicles will result in the maximum score for particles. 3.2.3.2. VCD (consumer information/TTW) Based on an expert’s report of IFEU, VCD [16, 17] publishes a ranking list for cars with regard to environmental concerns. The ranking list called ‚Auto-Umweltliste‘ is designed to inform the consumers. The Auto-Umweltliste addresses the environmental impact of cars to four different categories with a rating from 0 to 10 points in each case, but the four distinct categories have different shares of the overall appraisal. The four categories affect: - CO2-emissions (with 10 points relating to 60 g/km and 0 points to 180 g/km; share of the overall rating: 60 per cent) - noise (with 10 points relating to 65 dB(A) and 0 points to 75 dB(A); share of the overall rating: 20 per cent) - human burden from pollutants (NOX, NO2, PM); share of the overall rating: 15 per cent - impact on the nature; share of the overall rating: 5 per cent The scoring of the two last mentioned categories complies with the following pattern which strongly depends on the exhaust emission stages Euro 4, Euro 5, Euro 6. 
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