The all-new BMW i4, in the top-of-the-line M50 version, was recently range tested by Bjørn Nyland in cold weather conditions (1-2°C and wet roads).
The BMW i4 has a 83.9 kWh battery (81.5 kWh net usable), according to the manufacturer, and in optimum conditions should get up to 510 km (317 miles) of range.
The company reports that the EPA range is also pretty good (see full report here):
