From the i3 manual:I had to detour off the main road near Nottingham last Thursday because it was blocked and there was a lot of local flooding on the back roads. The last was the deepest, but it was a really long way to go back, do I pressed on and the i3 did it fine. There was a 535d broken on one side and a school bus on the other!
RTFM!From the i3 manual:
Do not exceed the maximum water level and maximum speed; otherwise, the vehicle's engine, the electrical systems and the trans‐ mission may be damaged.
Drive though calm water only and only if it is not deeper than 9.8 inches/25 cm and at this height, no faster than walking speed, up to
3 mph/5 km/h.