Presuming yours is new, wait till it's done a few miles and then you will find it is rather enthusiatic! As to the brake hold it is fitted to ours BUT it is an automatic. The connection with a phone, we do not have as my Wife has only the simplest of mobiles. Interestingly, reading the handbook as I do when waiting for my other half. On the question of this auto emergency calling it says, the battery on the car could be damaged and therefore it wont work. The mobile phone could be thrown out of the window on impact and therefore no connection can be made and so on. Begs the question when will it work? All this technology and the simplest of things can rodger it up. As to the ride, it is a lot softer than a Honda Jazz.
An example of the vagueries of an accident. I dealt with an accident, head on between a Jaguar and an 1100. The 1100 was minding its own business and on the correct side of the road. A very young baby on the back seat in a carry cot and husband and wife up front. An eye witness stated the wife went backwards and forwards like a yo yo through the screen and the seat belt saved her she had a few scratches .Her husband was trapped by the wheel arch coming back into the cabin. The point of this, when we were clearing up, I found the Wife's wedding ring in the gutter some distance from the impact. The Baby according to the eye witness didn't move and was still asleep
Point of the tale, if a wedding ring.can come off a finger and be projected some distance, how far can a mobile phone travel and heaven help some one if they happen to be in the way. A mobile phone in projectile mode can do an awful lot of damage and aint much good to a car occupant wanting an automatic connection in an emergency.