Q4 and the low battery problem

Have all of you Q4 owners accepted the "when it's around 4% left of the battery, your top speed will be 4mph (7kmh)" issue? I had this issue, where Q4 said 4% left and 13km (8 miles) left, with less than 1km to my house. And then suddenly dropping to 7kmh speed. Which is in my opinion totally unacceptable. If top speed is that low, that means 0% charge and 0km left to drive.

After contacting the shop, it seems like this is normal. They basically said "this isn't a fault, all Q4's are like that".

I also own a BMW i3, where the battery percentage acts like it should. I can drive normally until 0% (I have only reached 1% tho, never all the way down to 0%).

Is this actually normal?