What the Upland smog check program requires

Upland, located in San Bernardino County, follows California's statewide smog check rules. If you own a vehicle registered in Upland, you must pass a smog inspection every two years (or annually if your vehicle is model year 1975 or older). The test measures your car's emissions to may support it meets state air quality standards.

You cannot renew your vehicle registration without a current smog certificate. The test itself costs between $30 and $70 depending on the testing station, and you'll need to pass before you can complete your registration renewal with the California Department of Motor Vehicles (DMV).

Certain vehicles are exempt: electric vehicles, vehicles under 6,000 pounds that are model year 2000 or newer (in some cases), and vehicles that have been registered in California for less than eight weeks. Check your vehicle's registration documents or contact your local smog station to confirm whether your car needs testing.

Key Takeaways

  • Upland vehicles must pass a smog check every two years to renew registration, with annual testing required for vehicles model year 1975 and older.
  • You can find certified smog testing stations in Upland through the California Bureau of Automotive Repair website or by searching for "smog check near me."
  • The test costs $30 to $70 and takes about 10 to 15 minutes; you receive a certificate when ready if you pass.
  • If your vehicle fails, you have 30 days to make repairs and retest at no additional charge at the same station.
  • Electric vehicles and some newer, lighter vehicles are exempt from smog testing requirements.

Finding a smog testing station in Upland

The California Bureau of Automotive Repair maintains a searchable database of all certified smog stations. Visit the BAR website and enter your zip code (91784 or 91785 for Upland) to see stations near you, their hours, and whether they accept walk-ins or require appointments.

Most Upland stations are independent repair shops or gas stations with smog certification. Call ahead to confirm they're open and whether you need an appointment. Many stations can test you the same day, though during peak registration renewal periods (late summer and early fall) wait times may be longer.

Bring your vehicle registration, proof of ownership, and a valid ID. The technician will run your vehicle through the emissions test, which typically takes 10 to 15 minutes. If you pass, you receive a certificate on the spot that you can use to renew your registration online or at the DMV.

What happens if your vehicle fails the smog check

If your vehicle fails, the testing station provides a detailed report showing which emissions standards you didn't meet. You have 30 days to repair your vehicle and return to the same station for a free retest. You don't pay for the retest itself, though you may pay for repairs to your vehicle.

Common reasons for failure include a faulty oxygen sensor, a malfunctioning catalytic converter, or an engine problem that triggers the check engine light. A mechanic can diagnose the issue using the failure report. Some repairs are inexpensive (under $100), while others may cost more depending on what needs fixing.

If you cannot afford repairs, look into the California Consumer information Program (CAP), which may help pay for smog-related repairs on vehicles that fail testing. may be able to access depends on your household income and vehicle age. Contact your local air quality management district for information about CAP in San Bernardino County.

Renewing your registration after you pass

Once you have a passing smog certificate, you can renew your vehicle registration through the California DMV website, by mail, or in person at a DMV office. The certificate is valid for 30 days, so complete your registration renewal within that window.

If you renew online or by mail, upload or mail a copy of your smog certificate along with your renewal notice. If you go to a DMV office in person, bring the certificate with you. Registration renewal fees vary based on your vehicle's value and age; check your renewal notice for the exact amount.

Your new registration sticker will arrive by mail within two to three weeks. You must display it on your vehicle's license plate. If your registration expires before the sticker arrives, you can print a temporary registration from the DMV website to carry in your vehicle.

Understanding your vehicle's emissions and air quality

The smog check measures two main things: tailpipe emissions (what comes out of your exhaust) and your vehicle's onboard diagnostic system (which detects engine problems). Vehicles that emit too much nitrogen oxide, particulate matter, or hydrocarbons fail the test.

San Bernardino County, where Upland is located, has historically struggled with air quality due to geography, traffic, and industrial activity. The smog check program is one tool California uses to reduce vehicle emissions and improve regional air quality. Keeping your vehicle well-maintained—regular oil changes, air filter replacements, and prompt repair of engine problems—helps you pass and reduces pollution.

If you're considering an electric vehicle, you would be exempt from future smog checks entirely. Plug-in hybrids and hybrid vehicles still require smog testing because they have gas engines.

Frequently Asked Questions

When exactly do I need to renew my smog check?

Your smog certificate is valid for 30 days from the test date. You must renew your vehicle registration before your current registration expires. Check your registration renewal notice for the expiration date; if you're unsure when you last tested, contact the BAR or your local smog station.

Can I get a smog check before my registration expires?

Yes. You can test up to 90 days before your registration expires. This gives you time to make repairs if you fail, then retest and renew your registration before the important date.

What if I move out of Upland but keep my California registration?

You still must pass a smog check every two years to renew registration, regardless of where you live in California. Use the BAR database to find a certified station in your new location.

Do I need a smog check if I'm selling my car?

California does not require a smog check to sell a vehicle, but the buyer will need one to register it in their name. Some private sales include a smog check as part of the deal; check with your buyer about their expectations.

What if my check engine light is on?

Most smog stations will not test a vehicle with an active check engine light. Have the light diagnosed and repaired first, then return for testing. The repair may be straightforward (a loose gas cap) or more involved (a sensor or converter issue).