Are your shops all the same company?At Cal Smog Network stations: Independently owned stations sharing operational standards and brand.
Can a STAR station handle a gross polluter retest?At Cal Smog Network stations: Yes — STAR-certified stations are required for GP and DMV-directed retests.
Can I book an appointment if I want to?At Cal Smog Network stations: Yes — just call or text us to set a time — though walk-ins are always welcome.
Can I get smog before my flight?At Cal Smog Network stations: Yes — drive in and we'll prioritize quick-turn customers.
Can you re-print my smog certificate?At Cal Smog Network stations: Yes if you call us with your license plate or VIN we can reissue.
Catalytic converter is under warranty — what now?At Cal Smog Network stations: California emissions warranty covers cat converters for 7 years/70,000 miles on most cars.
Do gasoline pickup trucks need smog check?Yes — gasoline pickup trucks under 14,000 lb GVWR need a smog check.
Do hybrids need a smog check in California?Yes — hybrids need a smog check after the first 8 model years. They are treated like gasoline vehicles.
Do I need smog to transfer my classic car?For pre-1976 gasoline vehicles, no smog check is needed.
Do I need to do smog before or after I get my DMV notice?After — your DMV renewal notice tells you if smog is needed.
Do I really not need an appointment?At Cal Smog Network stations: Right — walk in any time during business hours.
Do I still need a paper smog certificate?No — California uses electronic filing since 2010.
Do motorcycles need a smog check in California?No — motorcycles are exempt from California smog inspection.
Do plug-in hybrids need a smog check?Yes — plug-in hybrids have a combustion engine and need smog after the first 8 model years.
Do Teslas need a smog check in California?No — they are fully exempt.
Do you handle commercial fleets?At Cal Smog Network stations: Yes — we test commercial fleet vehicles. Vehicles up to 14,000 lb GVWR follow the standard California smog rules; over 14,000 lb, diesel vehicles are exempt from the Smog Check Pro
Do you have a waiting area with WiFi?At Cal Smog Network stations: Most of our shops have air-conditioned waiting areas; WiFi varies.
Do you have parking?At Cal Smog Network stations: Yes — most shops have paid customer parking on-site.
Do you keep my license plate info?At Cal Smog Network stations: We keep it only as required by state reporting. It is never shared with third parties.
Do you offer fleet accounts with monthly billing?At Cal Smog Network stations: Yes — most locations offer fleet accounts. Contact us for fleet onboarding.
Do you speak Spanish?At Cal Smog Network stations: Yes — bilingual English and Spanish service is available.
Does a 1976-1995 car still need smog?Yes — it receives a tailpipe-only inspection (no OBD).
How do I know if my car needs a wheel alignment?Pulling to one side, an off-center steering wheel on a straight road, uneven tire wear, or any significant impact (pothole, curb) are the clear indicators.
How early can I do my smog before registration is due?Up to 90 days before registration expires.
How long does a car battery last?Most car batteries last 3-5 years — California's heat degrades batteries faster than cooler climates.
How long is the smog certificate valid?The certificate is valid for 90 days from the inspection date for DMV registration purposes.
How often does my Camry or Civic need a smog check?Your car needs a smog check every two years after the 8th model year.
How often should I flush my coolant?Every 30,000 miles or every 2-3 years — whichever comes first — is the typical interval for most vehicles.
How often should I get an oil change?Change conventional oil every 3,000-5,000 miles and full synthetic oil every 7,500-10,000 miles. Follow your owner's manual.
How often should I replace my engine air filter?Every 15,000-30,000 miles depending on driving environment — dusty or polluted areas need more frequent changes.
How often should I rotate my tires?Every 5,000-7,500 miles — or every oil change on most vehicles — is the standard recommendation.
I just moved to CA — when do I need smog?You need a smog check at your first California registration application — within 20 days of moving.
Is your shop wheelchair accessible?At Cal Smog Network stations: Most of our shops are; please call ahead to confirm at your nearest location.
Light just came on yesterday — can I still smog?Probably not — drive cycle hasn't run long enough.
My Corolla failed smog — what is the most common fix?An oxygen sensor is the most common fix.
Should I repair or replace a cracked windshield?Chips smaller than a quarter and cracks shorter than 6 inches can often be repaired; larger damage or anything in the driver's sightline typically requires full replacement.
What are signs I need exhaust repair?Louder-than-usual exhaust noise, a rattle or hissing underneath, exhaust smell inside the cabin, reduced fuel economy, or a check-engine light are the key signs.
What are the signs of a dying car battery?Slow engine crank, dim headlights, electrical glitches, a swollen battery case, or the battery warning light are the main signs.
What are the signs of worn suspension or steering components?Excessive bouncing, clunking over bumps, pulling to one side, uneven tire wear, or loose steering feel are the key warning signs.
What causes a rough idle or engine misfire?Fouled spark plugs, a failing ignition coil, vacuum leak, dirty fuel injector, or low compression are the most common causes of rough idle and misfires.
What do I need to bring for my smog check?At Cal Smog Network stations: Bring just the vehicle. We pull your DMV renewal information electronically.
What does 'OBD not ready' mean?Your car's computer hasn't finished its diagnostic checks since last reset.
What does a cabin air filter do and when should I replace it?The cabin filter cleans air entering your car's interior — replace it every 15,000-25,000 miles or sooner if you notice weak airflow or musty odors from the vents.
What does a check engine light diagnostic involve?A proper diagnostic goes beyond pulling the stored code — a technician uses live data, actuator tests, and component testing to confirm the root cause before recommending any repai
What does a pre-purchase inspection include?A thorough pre-purchase inspection covers the engine, transmission, brakes, suspension, electrical, fluid condition, body and frame, and a test drive — giving you an independent pi
What does a steering and suspension service involve?Suspension service involves inspecting and replacing worn struts, shocks, ball joints, tie rods, control arm bushings, and sway bar links — followed by a wheel alignment to restore
What does an automotive electrical diagnostic involve?A technician uses a scan tool and circuit-level testing to isolate the fault — not just reading a code, but tracing voltage, ground, and continuity in the actual circuit.
What is a 30k 60k 90k mile service?Manufacturer-defined major service milestones that replace fluids, filters, belts, and plugs on a schedule — the 30k/60k/90k framework is shorthand for escalating inspection depth.
What is a CARB EO number?A CARB EO number is an Executive Order from the California Air Resources Board.
What is a DPF and does it affect smog?Diesel Particulate Filter — yes, it must be intact and functional.
What is a gross polluter?A vehicle failing smog by more than double the limit on any tested gas.
What is a multi-point vehicle inspection?A multi-point inspection is a systematic check of your vehicle's major systems — brakes, tires, fluids, belts, lights, battery, and steering — giving you a prioritized list of what
What is included in a tune-up?A modern tune-up replaces spark plugs, air filter, and fuel filter, inspects ignition wires and coils, and includes a diagnostic scan — not the carburetor-era procedure of decades
What is the difference between a test-only smog shop and a test and repair shop?At Cal Smog Network stations: A test-only shop does the smog inspection only; a test-and-repair shop can both inspect your vehicle and fix any emissions-related failures on the same visit.
What is the difference between a transmission service and a transmission rebuild?A transmission service replaces fluid and filter for preventive maintenance; a rebuild disassembles and replaces worn internal components when the unit is mechanically failing.
What is the difference between an AC recharge and AC repair?A recharge adds refrigerant; a repair fixes the leak or component that caused the refrigerant loss in the first place.
What payment methods do you accept?At Cal Smog Network stations: We accept cash, debit, and major credit cards (Visa, Mastercard, AmEx, and Discover).
What's included in an oil change service?Drain old oil, install new oil to spec, replace filter, check fluid levels, and perform a multi-point safety inspection.
When do I need to replace my tires?Replace tires when tread depth reaches 2/32 of an inch — use the penny test (Lincoln's head exposed = replace) — or after any major damage like sidewall bulges.
When do you file the cert with DMV?At Cal Smog Network stations: We file the certificate immediately and electronically — usually the same business day.
Why do hybrids fail with permanent codes?Older codes remain stored in memory.
Why does my car keep failing the OBD readiness check?At Cal Smog Network stations: The usual causes are a recent battery disconnect, an ECU reset, or a faulty sensor.
Why is my car AC blowing warm air?Low refrigerant from a slow leak is the most common cause — but a failed compressor, clogged condenser, or bad expansion valve can also cause warm air.
Will a DEF problem fail smog?Yes if it triggers the OBD system into 'not ready' or active fault state.
Will a loose gas cap fail smog?Yes — EVAP system leak detected through OBD will fail smog.
Will aftermarket parts fail my smog?It depends on the CARB EO number.
Will the check engine light fail me?At Cal Smog Network stations: Yes — illuminated check engine light is an automatic smog fail.
Will you refund if my car fails?At Cal Smog Network stations: No — the inspection fee covers the test, regardless of pass/fail.