Who is responsible for ensuring a vehicle is compliant before registration in California?

The vehicle owner is responsible for ensuring that a vehicle is compliant with the emission standards before registration in California. This responsibility includes obtaining a valid smog check certificate, which demonstrates that the vehicle meets the required emissions limits. The owner must take proactive steps to ensure that their vehicle passes the smog test, as it is ultimately their obligation to maintain compliance with state regulations.

While other parties, such as the dealership or the smog station, may assist in the process—for example, dealerships often conduct smog checks before selling a vehicle—the final responsibility lies with the owner. The DMV does require the submission of a smog check certificate for registration, but it does not hold the responsibility for ensuring compliance; instead, it serves as a regulatory authority that enforces compliance during the registration process.