Vehicle Setup Wizard does not work in prefab mode. It can be used in scene mode only on either normal objects or prefab instances.

Vehicle Setup Wizard is a script that automates a part of vehicle setup process. It sets up everything that is required for vehicle to work:

• WheelControllers - visuals are only auto-assigned if wheels have substring wheel in them, case-insensitive
• Collider
• Rigidbody
• VehicleController.
• Camera and CameraChanger.
• InputProvider - if not already present.
• Powertrain - WheelComponents, WheelGroups, Differentials. All vehicles are set up as 4×4 by default.

Not everything is set up automatically and this script should be considered as a first step in a vehicle setup process.