It's painful, isn't it?
I had some dimwit run into the back of the i3 when we were stopped in traffic. I suspect the driver was messing about on her phone because she was travelling too fast for the conditions and braked late. (I saw her coming in the rearview mirror, but I had nowhere to go)
Anyway, there was a solid whack in the rear of the car. The only apparent damage was a small piece of paint scratched off the back bumper. I was concerned about unseen damage, so I dropped my 2 passengers off and took the car for a check at the dealer. Thankfully, nothing major. The replacement bumper was ordered and will be painted and installed next week. AU$2200 (US$1600)
From what I have heard, there is some messing around aligning replacement panels on the i3.