What you need to do to register a car in California

California car registration is handled by the Department of Motor Vehicles (DMV). You register a vehicle by submitting proof of ownership, proof of California residency, and payment to the DMV — either in person at a field office, by mail, or online through the DMV website. The process takes different forms depending on whether the car is new, used, or imported from another state, but the core documents stay the same.

Registration is not optional. California law requires every vehicle driven on public roads to be registered with the DMV. Your registration proves you own the vehicle and have paid the required fees. The DMV issues registration documents and a license plate (or renews your existing plate) as proof.

Key Takeaways

  • You must register your vehicle with the California DMV within 20 days of purchase or moving to California, or face late fees and penalties.
  • The documents you need are proof of ownership (title or bill of sale), proof of California residency (utility bill or lease), your driver's license or ID, and proof of a passing smog check for most vehicles.
  • Registration fees vary based on the vehicle's value, weight, and age, and you can find your exact fee using the DMV's fee calculator on their website.
  • You can register online, by mail, or in person at a DMV field office, and online registration is usually the fastest option if your vehicle meets the requirements.
  • Your registration must be renewed every two years, and the DMV will send you a renewal notice before your current registration expires.

Documents you need before you start

Gather these documents before you contact the DMV or visit a field office. Having them ready speeds up the process and prevents delays.

Proof of ownership: If you bought the car from a dealer, you will have a title document (also called a certificate of title). If you bought it from a private seller, you need a bill of sale signed by both you and the seller, plus the title transferred to your name. If the car is new and you just drove it off the lot, the dealer usually handles the first registration for you.

Proof of California residency: The DMV accepts a utility bill, lease agreement, mortgage statement, or bank statement dated within the last 60 days. Your name must appear on the document. A driver's license alone is not enough.

Your ID: Bring your California driver's license, ID card, or passport. If you do not have a California driver's license yet, you can still register the vehicle, but you will need to show another form of ID and proof of residency.

Smog check certificate: Most vehicles in California must pass a smog inspection before registration. The test checks your vehicle's emissions. You get the test done at a smog station (not the DMV), and they give you a certificate to submit with your registration. New vehicles and vehicles older than 1975 are exempt. Some counties have different rules, so check the DMV website for your county.

How to register online, by mail, or in person

The DMV offers three main paths. Online is fastest if your vehicle qualifies. By mail works if you prefer not to visit an office. In person is necessary for some situations and lets you handle everything in one trip.

Online registration: Go to the DMV website and select "Register a Vehicle." You will need to enter your vehicle identification number (VIN), proof of ownership information, and payment details. Not all vehicles can be registered online — the system will tell you if yours cannot. If you can register online, you will receive your registration documents by mail within two to three weeks.

By mail: Fill out Form REG 343 (process for Title or Registration) or the form that came with your vehicle documents. Include copies of your proof of ownership, proof of residency, and smog check certificate. Mail everything to the DMV address for your county. Processing takes four to six weeks. Include a check or money order for the registration fee.

In person at a DMV field office: Bring all original documents listed above, your payment method (cash, check, or card), and arrive early — field offices have wait times. A staff member will review your documents, calculate your fee, and issue your registration on the spot or within a few days. You can find your nearest office and check current wait times on the DMV website.

Understanding registration fees and what affects the cost

Registration fees are not flat. The DMV calculates your fee based on the vehicle's value, weight, and age. Two identical cars can have different fees depending on when they were purchased and their assessed value.

The DMV uses a formula that includes a base fee plus a vehicle license fee tied to the car's value. Older vehicles usually cost less to register than newer ones. Heavier vehicles (like trucks and SUVs) may cost more than lighter sedans. Electric and hybrid vehicles sometimes receive a fee reduction.

Use the DMV's online fee calculator on their website — enter your vehicle's information and it will show your exact fee. Fees typically range from around $200 to $400 for most passenger vehicles, but this varies. If you cannot afford the full fee upfront, ask the DMV about payment plans when you register.

Renewal: what happens after your first registration

Your registration is valid for two years from the date it is issued. Before it expires, the DMV will mail you a renewal notice about 60 days in advance. The notice includes the renewal fee and instructions.

You can renew online, by mail, or in person using the same methods as initial registration. Renewing online is usually fastest. If you renew online or by mail, you do not need to take a smog test every time — California requires a smog check every two years, and the DMV coordinates this with your registration renewal cycle. Your renewal notice will tell you whether you need a smog check for that renewal.

Do not ignore the renewal notice. If your registration expires and you drive on public roads, you can be cited and fined. If you move or your vehicle information changes, contact the DMV to update your registration.

Special situations: new vehicles, used vehicles from out of state, and transfers

New vehicles: If you buy a new car from a California dealer, the dealer usually registers it for you as part of the sale. You will receive your registration documents within a few weeks. You do not need to visit the DMV yourself.

Used vehicles from out of state: If you move to California with a vehicle registered in another state, you have 20 days to register it in California. Bring your out-of-state title, proof of California residency, and a smog check certificate. The DMV will issue a California title and registration. Your out-of-state registration is no longer valid once you register in California.

Transferring registration to a new owner: If you sell your vehicle, the new owner must register it in their name. You should notify the DMV that you no longer own the vehicle to avoid liability for tickets or accidents. You can do this online through the DMV website or by mail. The new owner will follow the standard registration process.

What to do if registration is delayed or denied

If you submitted your registration and have not received your documents after the expected timeframe, contact the DMV to check the status. You can call their customer service line, visit a field office, or check online using your process number.

Registration can be delayed if documents are missing, incomplete, or unclear. The DMV will contact you if this happens. If your registration is denied, the DMV will explain why — common reasons include a lien on the title, unpaid parking tickets, or a failed smog test. You can address the issue and resubmit.

If you have questions about your specific situation, the DMV website has a contact form and phone numbers for different regions. Field office staff can also answer questions in person.

Frequently Asked Questions

What happens if I drive without registering my car?

Driving an unregistered vehicle is illegal in California. You can be stopped by law enforcement and cited. Fines start at around $250 and increase if you continue to drive unregistered. If you recently bought a car, register it within 20 days to avoid penalties.

Do I need to register my car if I only drive it on private property?

No. Registration is required only for vehicles driven on public roads. If you keep your car on private property and never drive it on streets or highways, registration is not legally required. However, most people register regardless because they may need to drive it at some point.

Can I register a car if the title is in someone else's name?

No. The person whose name is on the title must be the registered owner, or the title must be transferred to you first. If you bought a car and the seller has not transferred the title, contact them to complete the transfer before you register. If there is a dispute, contact the DMV for guidance.

How long does it take to get my registration after I explore?

Online and in-person registration usually take two to three weeks for documents to arrive by mail. By-mail registration takes four to six weeks. If you register in person at a field office, you may receive temporary registration on the spot and permanent documents by mail later.

What if I fail the smog check?

If your vehicle fails the smog test, you cannot register it until repairs are made and it passes. You will need to take it to a repair shop, have the emissions problem fixed, and then take it back to the smog station for a retest. Once it passes, you can proceed with registration.