Bumper Repairs or Replacement: Which Makes Sense?

Scuffs and scrapes

Surface scuffs, where the paint is rubbed or marked but the plastic is intact, are usually the easiest to deal with. The area is cleaned, sanded, filled where needed, primed and repainted. Smaller marks may be suitable for a smaller-scale cosmetic repair instead of a full bumper respray.

Look closely, though. A scuff that seems minor can sit on top of a flexed or cracked area, and it is worth running your hand round the edges of the bumper to feel for anything loose or uneven.

Cracks and splits

Plastic bumpers can often be repaired by joining cracks and rebuilding the surface, and many repairers do exactly that. It depends on where the crack is, how long it is and what the plastic is. A short crack in a flat area is quite different from a split running through a curve or a mounting point.

A bumper that has been weakened in several places, or that is distorted so badly it will not sit properly, is generally better replaced. A repair that will not hold its shape or flex properly is not worth the effort. Only inspection can tell you which side of that line yours falls on.

• Short, clean cracks in flat areas are often repairable
• Long splits across curves may need replacing
• Missing chunks of plastic usually point to replacement
• A bumper that will not sit flush is a warning sign

Tabs, brackets and mounting points

Behind the cover, a bumper is held on by small plastic tabs and brackets. They are the first parts to break in an impact. When they snap, the bumper sags, rattles or leaves an unsightly gap against the wing, even though the outer surface may look fine.

Broken tabs can sometimes be repaired, and brackets can be replaced, but if the mounting points are badly damaged the sensible answer may be a new bumper. Make sure the repairer checks the fixings, not just the paint.

Parking sensors, cameras and what lies behind

Many modern bumpers hold parking sensors, cameras or radar units, and the cover itself may be calibrated to work with them. A knock that looks cosmetic can move a sensor from its position or damage a wire. If the car has driver-assistance systems, tell the repairer when you ask for the estimate so they can check them.

Behind the cover you will also find the bumper beam and the crash absorbers, and sometimes the radiator or lighting. These are the parts that do the real work in an impact, and they are worth looking at whenever a bumper has taken a harder hit than a simple scrape.

Paint and blending

Whether the bumper is repaired or replaced, it has to be painted to match the car. New bumpers usually arrive in primer, so they need preparing and painting, and the colour has to be matched to the surrounding panels, which may have faded in the sun. Blending the paint into neighbouring panels can help the result look seamless.

At Banks of the Tyne in Hebburn we do the bodywork and the paintwork under one roof, which keeps the repair and the colour match in the same hands. Ask us at the estimate how we would approach your car.

Repair or replace: the practical test

Repair tends to make sense where the damage is limited, the plastic is sound and the mounting points are intact. Replacement tends to make sense where the bumper is distorted, heavily cracked or has lost its fixings, or where a repair would involve so much work that a new part is simpler.

Cost depends on the type of bumper, the paint finish, the sensors and the labour involved, so a general rule is not possible. An honest estimate should explain the reasoning behind whichever route is recommended.

Frequently asked questions