Driving through water can be dangerous, especially if you're not familiar with the section that's under water and if there's a water current. It doesn't take much for you to lose traction, where your car can be swept away.
It's best to take another route if you can, or turn around. If you absolutely must proceed, I would recommend the water not be higher than the start of the bottom-center section of the car.
Should have been more clear. It's on a city road in the middle of town, no chance of getting swept away. The city rainwater drainage can't keep up with the amount of rain so it's filling the road. Will it damage the car (battery?) if the water reaches the undercarriage of the car?
Funny. I had the same issue this morning.
My rule of thumb is if it's deep enough to touch the bottom of the undercarriage, I try to find another way around, if possible.
If we're talking about a residential road with 0 chance of being swept away... I would still be concerned about ripping the undercarriage felt. I so wish they'd just give us all a new piece...
It's February and pouring rain in my area. On the way to work this morning, I had to drive across a section of road that probably had 6 inches of rainwater. Is there a guideline for how much water you can drive through?