If you are bringing a vehicle into California from another state, a SMOG inspection may be part of the registration process. The exact requirement depends on the vehicle and the DMV transaction.
Why drivers get surprised
People often assume that a vehicle that already passed inspection in another state will automatically satisfy California requirements. California rules can be different, so that assumption can cause delays.
What to check first
Review your DMV paperwork, confirm whether the vehicle is exempt or not, and make sure the vehicle is actually ready for inspection if a test is required.
Timing matters
If a registration deadline is close, do not wait until the last minute to figure out whether the vehicle needs inspection, repairs, or a specific station type.