I'd be interested to know what depth of flood water you safely got through, so if I'm ever facing a flooded road I can check whether I must back away or can proceed?
In another thread there is video of an MG4 getting through nearly a metre of floodwater. The driver was absolutely negligent, he seemed not even to be aware of the water and just barrelled into it. The car actually floated for a few seconds in the middle, but the driver was really lucky and momentum carried him forward to a place where his wheels got traction again.
Not that I would have attempted this, but it would seem the MG4 made it through unscathed, or do you think it will incur problems later on? ? Fast forward to the 2 minute 7 second mark to see the MG4:
www.mgevs.com
So we know that much can be got through. The car can't hydrolock like the ICE cars in the video were doing. But there's no way it was safe and he could easily have been swept away. I would not have believed that 1,800 kg of car would float like that but it did. It seemed as if the car was well enough sealed (for the 30 seconds it was in there) to acquire buoyancy and behave like a boat - but one with no rudder.
Someone in the comments said he'd seen Teslas do the same thing. The lighter ICE cars kept their wheels on the road though, as if they were just filling up from underneath and not achieving buoyancy. Then their engines stopped and that was that. The EV's motor kept going and got the car out of it.
Do not try that at home. I think MG said something about 400 mm when asked. I would think a foot or so would be OK, but really, is it worth the risk even if your motor doesn't stop? Oil breather, undertray, who knows what might happen.
In the other thread someone also just posted a video of a Leaf, certified to 700 mm, going through some quite deep water, with the driver taking the proper measured approach to the exercise. Scared the willies out of me.