EU-norms for fuel consumption information for cars: More than just an annoyance for car buyers

In everyday situations cars clearly use more fuel as the carmakers say they should. The manufacturers' specifications are the result of a test that the EU prescribes for the approval, sale and registration of new vehicles. Ferdinand Dudenhöffer, EcoGlobe Institute and University of Duisburg-Essen, and Eva Maria John, EcoGlobe Institute and Gelsenkirchen University of Applied Sciences comment on this discrepancy.