How to make vehicle upgrades in Subnautica 2
Vehicle upgrade confusion usually comes from the station split: build vehicle pieces through the Tadpole/Moonpool/Vehicle Fabricator path, then craft upgrade modules at the Modification Station when the blueprint appears.
- For the Tadpole build path, scan fragments, set up the Moonpool/Tadpole Dock space, and use the Vehicle Fabricator attached to the pool.
- For Tadpole modules such as depth or efficiency upgrades, unlock the blueprint and craft the module at the Modification Station.
- After crafting a module, install it from the Tadpole upgrade compartment and test depth, power, and repair readiness before a deep route.


