The electrification of passenger car is progressing nationally and internationally. Some of the growth rates exceed the forecasts, and major car manufacturers have already announced fixed dates for the complete phaseout of passenger cars with combustion engines. At the same time, initial experience has been gained with accidents and fires involving electric vehicles. However, a sufficient database from actual accidents on the fire behaviour of passenger cars with lithium-ion batteries is not yet available. This situation gave rise to the SUVEREN research project in 2017 with the aim of scientifically investigating the effects of vehicles with new energy carriers (NEC) on safety in underground traffic areas.