What is on the upper part of the car's rear bumper?
The upper part of the car's rear bumper usually refers to the rear bumper trim panel (also known as the rear bumper cover or rear bumper mask), which mainly serves the purposes of decoration, beautifying the rear of the car and protecting the bumper area. However, the specific components at this position may vary depending on the vehicle model and design. Common ones include:
Rear bumper trim panel / cover: It covers the top of the bumper, making the rear more aesthetically pleasing and providing some scratch protection.
Tail wing / tail door trim panel: In some models (especially sporty sedans or SUVs), there is a tail wing or tail door trim panel above the bumper. Besides being attractive, it can also improve aerodynamics and reduce air turbulence and resistance at the rear.
Rear fender: Some models (such as the Haval H6) call the board above the bumper the rear fender, which is part of the body panel and can reduce wind resistance and make driving smoother.
Bumper bracket / crossbeam: If referring to the internal or upper structure of the bumper, it might be the bumper bracket or crossbeam, which serves to support and transfer collision forces.
The naming and design of different vehicle models vary greatly. To confirm the exact name and function, it is best to refer to the vehicle manual or directly ask a 4S store or repair technician.
Additionally, the rear bumper itself typically consists of three layers: the outermost layer is the plastic outer panel (for energy absorption and scratch protection), the middle layer is the buffer layer, and the innermost layer is the cold-rolled steel plate or aluminum alloy impact beam, which connects to the frame and absorbs impact forces during rear-end collisions.
The upper part of the car's rear bumper usually refers to the trim panel, tailgate or tail wing area above the bumper, mainly serving the purposes of beautifying the rear shape, improving aerodynamic performance, and providing some buffering protection during reverse or low-speed collisions.
Specifically, the design and function of this area in different vehicle models may vary:
Decoration and aesthetics: The trim panel or cover on the rear bumper is used to cover and beautify the rear structure, making the rear lines more smooth and giving a stronger overall impression.
Aerodynamic optimization: Some models' tail wings or upper trim panels can reduce rear air turbulence and drag, improving driving stability.
Protection and buffering: The rear bumper itself absorbs impact forces during low-speed collisions to prevent large-scale damage to the rear; the upper structure can also share some impact forces, protecting the tailgate and internal components.
Integrated functional components: Some models integrate rear-end parking radar, cameras or millimeter-wave radars in this area to assist with parking and reversing.
Note: Some electric vehicles' rear bumpers do not protrude beyond the tailgate, and in low-speed rear-end collisions, the tailgate may be damaged first, resulting in higher repair costs.
The handling of rear bumper upper part faults depends on the type and severity of the damage. Minor scratches, small cracks or localized loosening can be repaired; for large deformations, fractures or damaged internal supports, replacement is recommended.
First, determine the type of fault
Surface scratches or paint cracking: Only the clear coat is damaged, polish with fine sandpaper and then polish; the color coat is damaged, use a touch-up paint pen or take it to a repair shop for re-painting.
Local dents or slight deformation: Without structural damage, use a heat gun or hot water to heat the deformed area, then use tools to suck out or push back to reset.
Cracks or fractures: Minor cracks can be repaired with a plastic welder; for deeper cracks, heat and melt the plastic welding rod to fill in, then polish and paint.
Large gaps or loosening: Mostly damaged fixing clips or deformation of the bumper, re-fix or replace the clips, with low costs.
Severe deformation, large fractures or damaged internal supports: Gaps over 20 centimeters, multiple cracks intersecting, or the distorted area exceeds one-third of the total, or the bumper loses its buffering effect, replacement is necessary.
How to choose between repair and replacement
Repair: Low cost, retains original factory parts. The plastic bumper can be sewn together at the torn area using welding technology, and welding repair nails can be added to enhance its impact resistance. Then, apply fiber dust and spray paint. The cost is usually around 1,000 yuan.
Replacement: The original factory bumper has better quality, toughness and appearance, but the cost is higher.
When the other party is fully responsible, you can directly request a replacement and have the other party's insurance company cover the cost; if it's your own responsibility, you need to weigh the maintenance cost against the aesthetic requirements.
Notes for Attention
Modern bumpers often carry electrical components such as radars. It is recommended to take them to a 4S store for repair to calibrate and verify the auxiliary driving functions.
Bumpers are mostly made of plastic, and the repair techniques are quite demanding. Improper operation may damage the primer layer. If you are not familiar with the process, it is best to entrust it to a professional auto repair shop.
If you have purchased commercial insurance, you can contact the insurance company for damage assessment and replacement at the 4S store to save costs.
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