The average cost to fix a cracked or dented bumper can vary depending on the severity of the damage and the type of bumper. Minor scratches and dents can cost as little as $50 to $150 to repair, while more serious damage can cost up to $1, 000 or more for a full replacement. Plastic bumpers are generally less expensive to repair than metal ones. It is best to get a quote from a professional repair shop to understand the exact cost of the repair for your specific car and bumper.