Definite improvement. I was just watching the crash results for the aveo the other day actually. The offset frontal crash put the rear end of the aveo5 several feet into the air and it swung around by nearly 90 degrees. That is scary, who knows what you will fly into on a real road.
I also noted that the crumple zone is reduced by around 50% of what it used to be. The door would actually warp enough for limbs to slide out of during a front impact on the earlier models. And the Sedans frame no longer seems to bend, something very easily noted in the earlier model tests.
I might have to free up some money and invest in a sonic, If I can.