Advent Calendar
Advent Calendar2021
Illustration · have this car? Upload a photo belowGTD78
Advent Calendar
Hot Wheels Formul8r 2021 · Advent Calendar
The Hot Wheels Formul8r was released in 2021 as part of the mainline in the “Advent Calendar” series, toy number GTD78.
- 2021 · Mainline
- GTD78
- Toy #
- GTD78
- Series
- Advent Calendar
- Year
- 2021
- Product line
- Mainline
- Casting
- Formul8r
- Designer
- Rob Matthes
- Color
- Black · black
- Tampo
- Turquoise & bronze decals on sides & hood, 3” on sides & hood, “FORMU8R” on hood
- Base
- Turquoise / Plastic
- Window
- Clear
- Interior
- Bronze
- Wheels
- Gold Y5 · Y 5 Spoke Wheel
- Country
- Malaysia / Indonesia
- Status
- Regular
- Notes
- Base code(s): P12, P25 · Formul8r
Our reading: base codes P12, P25 – pressed between week 12 and 25 of 2021. Our own interpretation of 13,498 codes in this database, not a statement by Mattel. How we read the base code.
Paint: Black; wheels: Gold Y5 (Y 5 Spoke Wheel); made in Malaysia / Indonesia.
The Formul8r casting first appeared in 2005 and has 39 releases in our database, most recently in 2026.
The Advent Calendar series of 2021 has 3 cars.
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Collector notes
What collectors know about this car: variants, finds, cards, wheels, colours.
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Frequently asked questions
What is the toy number of the Hot Wheels Formul8r?
The toy number is GTD78 (2021). It is printed on the back of the card.
Which series is the Hot Wheels Formul8r from?
It was released in 2021 in the mainline, series “Advent Calendar”.
Is the Hot Wheels Formul8r a Treasure Hunt?
No, it is a regular release.
Has Wheel Wonderland unboxed the Formul8r?
Not yet – you can request it on this page.
Formul8r: 39 versions
The 10 closest versions – see all on the casting page.
| Model | Series | Series # | Toy # | Color | Year | ||
|---|---|---|---|---|---|---|---|
| Formul8rGJM62 · Aqua | Mystery Models Series 3 | 8 | GJM62 | Aqua | 2020 | ||
| Formul8rGJM62 | Mystery Models (2020, Series 3) | 8/12 | GJM62 | 2020 | |||
| Formul8rGJM63 · Metalflake Teal | Mystery Models (Series 3) | GJM63 | Metalflake Teal | 2020 | |||
| Formul8rBlack | Multi-Pack Exclusives | Black | 2021 | ||||
| Formul8rX6999 · Black | Multipack Exclusive | X6999 | Black | 2021 | |||
| Formul8rGTD78 · Black | Advent Calendar | GTD78 | Black | 2021 | |||
| Formul8rBurgundy | Multi-Pack Exclusives | Burgundy | 2022 | ||||
| Formul8rHFK85 · Metallic Blue | Mystery Models Series 1 | 5 | HFK85 | Metallic Blue | 2022 | ||
| Formul8rHFK85 · Metallic Blue | Mystery Models (2022, Series 1) | 5/10 | HFK85 | Metallic Blue | 2022 | ||
| Formul8rX6999 · Burgundy | Multipack Exclusive | X6999 | Burgundy | 2022 |
More from Advent Calendar 2021
Advent Calendar
This page last changed: Oct 8, 2026. The Hot Wheels database behind it is our own and is updated daily – releases from 1968 onwards plus our own unboxing videos.