Working where others take their holidays: Spain is the next stage for the Mercedes-Benz EQC on the road to series production maturity. No chance for relaxation, however: part of the heat testing for the overall vehicle takes place on the Iberian peninsula. Following successful winter trials, the EQC is required to absolve an extensive test programme in the burning summer heat with temperatures of up to 50° Celsius. Particular attention is given to aspects which are very demanding for electric cars, i.e. air conditioning and charging, as well as cooling the battery, drive system and control units in extreme heat. Naturally classical criteria such as driving dynamics and ride comfort are also subjected to further, stringent tests.