If your DLC is not in inventory it may be because the DLC was purchased on another platform. DLC content is not shared across platforms.
Example: If you purchased a DLC pack on PlayStation, you won’t see it when playing on Xbox.
If you did purchase it on PlayStation to regain your DLC:
On PlayStation 5
- Start your PlayStation 5
- Launch Rocket League
- Select the … icon next to the Play button
- Choose View Product
- Scroll down to the Add-Ons tab
- Scroll all the way to the right
- Select View All Add-Ons
- Ensure that all listed DLC packs show as Installed
- Download any DLC packs that show as Purchased
On PlayStation 4
- Start your PlayStation 4
- Launch Rocket League
- Hold down the PlayStation button on the controller
This will open Rocket League game page - Select PlayStation Store in the upper left corner
- Locate the Add-Ons tab on the right side
- Press the X button to see the completed list of the Rocket League purchased DLC packs
- Ensure that all listed DLC packs show as Installed
- Download any DLC packs that show as Purchase