The bumper systems are designed to sustain a collision into a fixed barrier at either 8 km/h (5 mph) or 4 km/h (2.5 mph) without damage. After absorbing the energy of a collision, these bumper systems restore themselves to their original position. Both the front and the rear bumpers feature an impact bar and a polymer fascia cover. Both the front and the rear bumper assembly can be removed as a whole unit or the fascia cover can be removed separately.