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The article analyses the levels of magnetic induction in vehicles with three different drives: electric, hybrid and conventional. The aim of the research was to determine the intensity of low-frequency magnetic fields generated by the drive systems and their effect on the driver and passengers of the vehicle. The paper describes methods for measuring magnetic induction in various locations of the vehicle, such as the engine compartment and the power supply system. Measurements of magnetic induction were also performed during charging of an electric car. The research results indicate that the highest values of magnetic induction occur in electric cars and in the area of the charger during charging of these vehicles. In cars with conventional drives, the level of magnetic induction is mainly limited to the operation of the alternator. The power of the drive system has a large impact on the value of magnetic induction. In the case of measurements of magnetic flux density emitted by the power supply system and drive systems of fully electric and hybrid cars, the studies also showed that the location of elements such as the DC/AC converter and the cables connecting the converter to the electric motor and their distance from the driver\'s and passenger seats significantly affects their exposure level.