This isn't about the Volvo, it is about the Renault. The Modus is a Toyota Yaris/ Chevy Aveo sized car. So, it is pretty small. The crumple zones in a car are there to reduce the g-forces. You do not go from 40-0 in an instant, the car crumples in front of you so that that you have more time to come to rest, reducing the g-forces you face.
A well designed larger car is always going to be statistically safer but what this shows is that a modern small car is not a death trap.