Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your new MZGDONGF Carbon Rear Car Spoiler, designed specifically for the VW Jetta VII (2021-2025) model. This product is engineered to enhance your vehicle's aerodynamics, improve stability, and contribute to a more sporty aesthetic.

Image: The MZGDONGF Carbon Rear Car Spoiler shown installed on a white VW Jetta VII, alongside a standalone view of the spoiler.
Safety Information
- Ensure the installation area is clean and dry before beginning.
- Handle the spoiler carefully to avoid damage to the product or vehicle.
- After installation, avoid contact with water for at least three days to allow the adhesive to fully cure.
- If unsure about any step, consult a professional.
Package Contents
Please verify that all components are present before proceeding with installation:
- 1 x MZGDONGF Carbon Rear Car Spoiler
- Pre-applied Automotive-grade Double-sided Tape
Setup and Installation
The MZGDONGF Carbon Rear Car Spoiler is designed for easy, damage-free installation without the need for drilling. Follow these steps carefully for optimal adhesion and fit.
Preparation:
- Clean the Surface: Thoroughly clean the trunk surface where the spoiler will be mounted. Use a mild detergent and water, then wipe with rubbing alcohol to remove any wax, grease, or residue. Ensure the surface is completely dry.
- Test Fit: Carefully place the spoiler on the trunk lid without removing the tape backing. This allows you to determine the exact positioning and alignment. Mark the position with painter's tape if necessary.

Image: A visual guide illustrating the preparation and installation steps, including surface cleaning, test fitting, tape preparation, and final application.
Installation Steps:
- Prepare Adhesive Tape: The spoiler comes with pre-applied automotive-grade double-sided tape. For best results, you may gently warm the tape with a hairdryer (on low setting) for a few seconds to increase its tackiness, especially in colder environments.
- Peel Backing: Carefully peel off a small section of the red protective backing from both ends of the double-sided tape, leaving the majority of the backing intact. This allows for easier alignment.
- Align and Press: Align the spoiler precisely with your marked positions. Once aligned, firmly press down on the spoiler, starting from the center and working your way outwards, gradually peeling off the remaining tape backing as you go. Apply consistent pressure across the entire length of the spoiler to ensure full contact.
- Secure Adhesion: After the spoiler is in place, apply firm, even pressure along the entire length of the spoiler for several minutes. This helps to create a strong bond between the tape and the vehicle surface.

Image: A person's hands carefully pressing the carbon fiber spoiler onto the trunk lid of a white car during installation.

Image: A close-up view of the specialized double-sided tape used for secure and stable attachment of the spoiler.
Important Note: Do not allow the spoiler to come into contact with water (rain, car wash, etc.) for at least 72 hours (3 days) after installation. This curing period is essential for the adhesive to achieve its maximum bonding strength.
Operating Principles and Benefits
While a car spoiler does not require active "operation" by the user, its design provides continuous benefits during vehicle movement:
- Improved Aerodynamics: The spoiler is shaped to manage airflow over the rear of the vehicle, reducing aerodynamic drag.
- Increased Downforce: By creating downforce, the spoiler helps to press the rear tires more firmly onto the road surface, enhancing traction and stability, especially at higher speeds.
- Enhanced Driving Stability: The added downforce contributes to better handling and a more stable ride.
- Fuel Efficiency: By optimizing airflow and reducing resistance, the spoiler can contribute to marginal improvements in fuel efficiency.
- Aesthetic Enhancement: Beyond performance, the carbon fiber finish and sleek design significantly improve the vehicle's visual appeal, giving it a more sporty and aggressive look.

Image: The carbon fiber spoiler seamlessly integrated onto the rear of a white car, showcasing its design and how it complements the vehicle's lines.
Maintenance
To ensure the longevity and appearance of your carbon fiber spoiler, follow these simple maintenance guidelines:
- Regular Cleaning: Clean the spoiler regularly with mild automotive soap and water. Avoid abrasive cleaners or harsh chemicals that could damage the carbon fiber finish.
- Drying: After washing, dry the spoiler thoroughly with a soft microfiber cloth to prevent water spots.
- Waxing/Sealing: Periodically apply a high-quality automotive wax or sealant designed for clear coats to protect the carbon fiber from UV damage and maintain its glossy appearance.
- Adhesive Check: Occasionally inspect the edges of the spoiler to ensure the adhesive bond remains strong. If any lifting is observed, re-apply pressure or consult a professional.
Troubleshooting
Most issues related to the spoiler are installation-dependent. Consider the following if you encounter problems:
| Problem | Possible Cause | Solution |
|---|---|---|
| Spoiler not adhering properly / Lifting edges |
|
|
| Misalignment after installation | Incorrect initial positioning. | If adhesive has not fully cured, it might be possible to carefully re-position. If fully cured, removal may damage paint or spoiler. Professional assistance recommended. |
Specifications
| Feature | Detail |
|---|---|
| Product Name | Car Trunk Rear Spoiler |
| Applicable Models | VW Jetta VII (2021-2025) |
| Material | High Quality Carbon Fiber |
| Color | Carbon (Glossy normal Carbon finish) |
| Installation Type | Peel & Stick (Double-sided tape) |
| Item Weight | 2.2 pounds |
| Product Dimensions (L x W x H) | 0.39 x 0.39 x 0.39 inches (Note: These dimensions seem to be placeholder/generic, actual product dimensions would be larger) |
| Manufacturer | MZGDONGF |
Note: Product dimensions provided may be packaging dimensions. Actual spoiler dimensions will conform to the VW Jetta VII trunk lid.
Warranty Information
No specific warranty information is provided with this product. For details regarding potential manufacturer's warranty or return policies, please refer to your purchase documentation or contact the seller directly.
Customer Support
If you have any questions regarding the MZGDONGF Carbon Rear Car Spoiler, its installation, or performance, please do not hesitate to contact our customer support team. We are committed to providing excellent service and assistance.
Please refer to your purchase platform or seller's contact information for the most direct support channels.





