All the bumpers of Fieros are engineered to take a 2.5 mph impact on a rigid barrier and rebound back to their normal position thus taking the impact energy. The front and rear face bars are of urethane which, though can absorb some impact and return to normal state, the front one is molded with the front end panel and the front bumper fascia. The energy absorption capability of the front and rear bumper systems is made of honeycombed energy absorbing devices; these are plastic like honeycombs fixed to the bumpers with the help of plastic retainers. Where evident damage to either of the energy absorbing units is identified in a collision, then it should be replaced. Even if no part of the energy absorber appears to have been crushed by the impact but the bumper refuses to regain its position it should be replaced.