The function of the front grille of a car
The main functions of the front grille of a car are as follows
Ventilation and heat dissipation
The grille is located at the front of the engine compartment. It allows air to enter through a mesh structure, helping the engine, radiator and air conditioning system dissipate heat and preventing high temperatures from affecting vehicle performance.
Protective function
The metal grille can block flying sand, branches and other foreign objects during driving, preventing them from damaging the components inside the engine compartment.
Aesthetic design
The differences in the grille designs of various models have become one of the brand's hallmarks. For instance, the grille designs of models like the Passat feature brand characteristics and combine individual display with visual aesthetics.
The front grille of a car can be modified, but it is necessary to strictly abide by laws and regulations, ensure that the length and width of the vehicle are not changed, and promptly file with the vehicle management office after modification; otherwise, it will be regarded as illegal modification.
The conditions and requirements for legal modification
According to the latest regulations in 2025, legal modification must meet the following conditions:
Youdaoplaceholder0 Size limit : When modifying the grille, the length and width of the vehicle must not be altered; otherwise, it will not pass the annual inspection.
Youdaoplaceholder0 Filing requirements : After modification, an application for change filing must be submitted to the vehicle management office within 10 working days to ensure that the vehicle is consistent with the pictures on the driver's license.
Youdaoplaceholder0 Design specification : The original brand logo of the vehicle must be retained without affecting the approach Angle, departure Angle and safety performance of the vehicle.
Prohibited circumstances and precautions
Youdaoplaceholder0 Prohibited behavior :
Change the size or structure of the grille (such as widening or adjusting the wheelbase).
Using non-registered styles or modifications that affect vehicle recognition (such as mirror reflective films).
Youdaoplaceholder0 Risk Warning : Unauthorized modification may result in failed annual inspection, safety hazards (such as affecting heat dissipation or crash-collision performance), and even penalties. It is recommended to give priority to choosing the modification plan filed by the manufacturer and consult a professional institution.
Whether a damaged front grille of a car needs to be dealt with depends on the extent of the damage and personal needs: minor damage can be repaired by oneself or ignored, while severe damage is recommended to be replaced to ensure safety and aesthetics. Repair methods include DIY patching or professional maintenance, and the cost varies depending on the model and the extent of the damage.
Assess the extent of the damage and the necessity of repair
A broken grille usually does not affect the vehicle's driving function, but it may reduce its aesthetic appeal and pose potential risks:
Youdaoplaceholder0 Minor damage (such as small cracks or scratches) : can be self-repaired or ignored, and does not affect mechanical properties.
Youdaoplaceholder0 Severe damage (extensive cracking or deformation) : Replacement is recommended as it may affect engine heat dissipation (especially at high temperatures or high speeds), or cause fragments to fall off and interfere with vision.
Whether the damage to the front grille of a car affects safety needs to be comprehensively judged based on the extent of the damage:
Potential security risks
Youdaoplaceholder0 the heat dissipation system is blocked
A damaged grille may lead to a reduction in air intake, affecting the engine's heat dissipation efficiency. Long-term high-temperature operation will accelerate the wear of components and even cause malfunctions .
If the radiator is damaged by the impact of foreign objects (such as the grille breaking and being unable to block the crushed stones), it may cause serious problems such as coolant leakage .
Youdaoplaceholder0 structural protection weakens
The grille is connected to components such as the front bumper and headlights. Severe damage may affect the overall rigidity of the front of the vehicle, and its protective ability for core components such as the radiator will decline in minor collisions .
Non-direct impact
Youdaoplaceholder0 driving function is not restricted
A simple grille breakage does not cause the vehicle to fail to start or move, and the mechanical performance is usually not affected .
Youdaoplaceholder0 aesthetic and value issues
Damage will reduce the appearance integrity and second-hand valuation of the vehicle, but it is a non-functional impact .
Handling suggestions
Youdaoplaceholder0 Slight cracking : It can be left untreated for the time being, but regular checks should be made to see if it has expanded .
Youdaoplaceholder0 Severe damage : It is recommended to replace with original or compliant parts to avoid secondary damage caused by loose structure .
Youdaoplaceholder0 active grille model : Professional maintenance is required to prevent damage to the sensor or control system .
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