In the years 2016 and 2017 the decreasing trend of the specific CO₂ emissions of new vehicles halted, and in 2018 even recorded slight growth, thus the achievement of the target is seriously jeopardized. The positive aspect is that the large difference between factory data on energy use and CO₂ emissions and actual data decreased in 2018 with the introduction of a new measuring cycle. The average CO₂ emissions of all vehicles declined sharply in 2017 but in 2018 recorded growth. Such a trend may be due to both changing assumptions about distance travelled per vehicle for different classes of vehicles as well as the fact that in real life newer vehicles do not have lower CO₂ emissions than the older ones because they are heavier and more powerful. This is also reflected in average CO₂ emissions for new vehicles, where the declining trend has come to a complete stop and CO₂ emissions are now rising (the SUV phenomenon). The achievement of both targets is jeopardized and the implementation of measures in this area will have to be strengthened.