The series development process of the BMW i7 – the world’s only purely electrically powered luxury sedan – has entered its final phase, with the car undergoing a demanding test programme in extreme road and weather conditions. During so-called hot region testing on gruelling tracks and public roads all over the world, BMW’s development engineers verified the performance and reliability of the car’s electric motors, the all-wheel drive and the high-voltage battery when exposed to maximum stress from high temperatures, unpaved roads, and large differences in altitude.
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