1. Introduction
This manual provides detailed instructions for the assembly and use of your Hot Wheels Mega HW40 Vehicle Building Set. This set allows you to construct a replica of the classic HW40 racer model, featuring authentic details and an electric green paint job. It includes 90 pieces and a micro action figure.

Image 1.1: Hot Wheels Mega HW40 Vehicle Building Set packaging and contents.
Contents of the Box:
- 90 building bricks and pieces
- 1 poseable alien micro action figure
This construction toy is designed for ages 5 and up, promoting creativity and problem-solving skills through hands-on building.
2. Assembly Instructions
Follow these steps to assemble your Hot Wheels Mega HW40 Vehicle. Refer to the included visual guide for detailed piece identification and placement.

Image 2.1: Layout of building pieces and reference to digital instructions (tablet not included).
- Unpack Components: Carefully remove all bricks and the micro action figure from the packaging.
- Sort Pieces: For easier assembly, sort the bricks by color and size.
- Begin Base Construction: Start by building the chassis of the HW40 vehicle. This forms the foundation for the entire model.
- Add Body Panels: Attach the green body panels to create the sleek design of the racecar.
- Install Wheels: Securely attach the rolling wheels to the chassis.
- Detailing: Add smaller pieces for authentic details, such as the engine cover and transparent windshield.
- Micro Action Figure Assembly: If the figure requires minor assembly, follow the separate instructions for the figure.
- Place Figure: Once the vehicle is complete, the micro action figure can be placed in the driver's seat.

Image 2.2: A child engaged in the assembly process of the vehicle.

Image 2.3: The micro action figure fits securely into the driver's seat.
3. Operation and Play
Once assembled, the Hot Wheels Mega HW40 Vehicle is ready for play. The vehicle features rolling wheels for dynamic movement.
- Driving: Push the vehicle along flat surfaces to simulate racing.
- Figure Interaction: The micro action figure can be removed and re-seated in the vehicle.
- Customization: This set is compatible with other Mega Construx building sets and other major brands, allowing for creative customization and expansion.

Image 3.1: Illustration of compatibility with other building brick brands.

Image 3.2: A child enjoying the assembled vehicle.
4. Maintenance and Care
To ensure the longevity of your building set, follow these simple maintenance guidelines:
- Cleaning: Wipe pieces with a damp cloth if they become dirty. Avoid harsh chemicals or abrasive cleaners.
- Storage: Store the set in a cool, dry place away from direct sunlight to prevent discoloration or warping of plastic pieces.
- Disassembly: If disassembling the model, do so carefully to avoid damaging the bricks.
5. Troubleshooting
Should you encounter any issues during assembly or play, consider the following:
- Missing Pieces: Double-check the packaging and assembly area. If pieces are genuinely missing, contact customer support.
- Difficulty Connecting Pieces: Ensure pieces are correctly oriented and aligned. Apply gentle, even pressure.
- Model Instability: Review the assembly steps to confirm all connections are secure and no steps were missed.
6. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 2.5 x 5.5 x 2.5 inches (6.35 x 13.97 x 6.35 cm) |
| Item Weight | 4.9 ounces (139 grams) |
| Item Model Number | GYG32 |
| Manufacturer Recommended Age | 5 years and up |
| Number of Pieces | 90 |
| Brand | Hot Wheels (Mega Construx) |
| Release Date | May 22, 2021 |

Image 6.1: Approximate dimensions of the assembled vehicle.

Image 6.2: Front and rear views showcasing the vehicle's authentic details.
7. Warranty and Support
For information regarding warranty coverage or to obtain replacement parts, please contact Mattel customer service. Refer to the contact information provided on the product packaging or visit the official Mattel website.
Manufacturer: Mattel
Website: www.mattel.com





