E-mobility is treated as emission-free. Generally, this sentence can only be true in a very small range. Namely, about selected pa-rameters and in a very limited area. An example of this is the measurement of CO2 emissions in the immediate vicinity of BEV (battery electric vehicle) . The situation can change dramatically if you take into account the emissions in the energy production necessary for car traffic. This work presents this issue taking into account the energy mix in the various countries of the European Union. Simulation research shows that there are already countries in the EU where the operation of electric vehicles makes sense. Especially when it con-cerns CO2 emissions. Emissions below the standards for 2025 can be obtained there. Unfortunately, in most EU countries, the operation of BEV is associated with increased (in relation to present-day) CO2 emissions. Without changing the energy policy, and in particular the energy mix, introducing e-mobility is problematic.