Motor transport is one of the main sources of air pollution and greenhouse gas emissions. Creation of conditions for the implementation of the most effective environmental protection measures ensuring the sustainable development of motor transport is impossible without making decisions on the choice between alternative options. The paper considers the developed simplified methodological approach that allows comparing the environmental efficiency of environmental protection measures. The paper also describes the environmental assessment of the use of a multifunctional fuel additive that improves fuel efficiency and the environmental characteristics of vehicles using the developed approach.