Smog check due? We can help.
Whether your DMV notice just arrived or your last test raised a question, CAR gives you a place to start. Tell us what brought you in so we can help arrange the right service.
Time for a smog check
Planning around a registration renewal or vehicle sale? Have your vehicle details and DMV notice handy when you call. We’ll help you confirm what to book.
Your vehicle didn’t pass
Failed your smog test? CAR performs smog-related repairs. Bring your failed-test report so we can diagnose the issue, explain the recommended repairs, and help you prepare for a retest.
The check engine light is on
Give that dashboard warning some attention before your inspection. Our diagnostic service can help identify the problem and guide the repair conversation.
Before you bring your vehicle in.
- Bring your paperwork.Your DMV notice and any previous failed-test report help us understand the visit.
- Mention a recent battery change.Battery disconnection or code clearing can reset readiness monitors. Tell the team before testing.
- Tell us about warning lights or recent work.Share any dashboard warnings, repairs, or changes to emissions equipment.
- Confirm the right appointment.Have your year, make, model, and fuel type ready. Let us know if your notice specifies STAR.
People you can talk to. Help you can understand.
You shouldn’t need to be a mechanic to understand what your car needs. Bring us your questions, your inspection report, or the warning light you’ve been worrying about.
Certified Auto Repair has served San Luis Obispo since 1990. Our full-service shop offers a connection between testing, diagnostics, and the ongoing care your vehicle needs.
From daily drives through downtown to commutes around the Central Coast, we’re here to help you plan the next step.
Meet owner Isaac L. Feldman and Kevin Swift, or read our customer reviews.
A straightforward visit.
Tell us about your vehicle
Call or request service online. Mention smog testing, your vehicle details, and any deadline or special requirement on your notice.
Review the service plan
Confirm the inspection type, current price, and estimated timing with the team. If you have a failed report or warning light, let us know first.
Understand what comes next
Ask about your results and keep the report. If your car needs more attention, we’ll help explain the diagnostic and repair options.
Not sure what to schedule?
Start with a conversation. We’ll help you sort it out.
Smog & emissions FAQs.
Practical answers for San Luis Obispo drivers planning an inspection.
Requirements depend on your vehicle and registration situation. Have your DMV notice available when you contact us.
How much does a smog check cost in San Luis Obispo?
Call CAR for current pricing for your vehicle. Ask for the total, including any applicable certificate fee, and whether diagnostic work or a retest would be a separate charge.
Can my car pass with the check engine light on?
An illuminated check engine light prevents a passing Smog Check. Start with a diagnosis before scheduling the inspection. CAR can help you understand the next step.
What if I recently replaced my battery or cleared a code?
Tell us before your visit. Either can reset emissions readiness monitors. The vehicle may need a manufacturer-specific drive cycle before testing; a fixed mileage or a quick trip is not a guarantee of readiness.
Do I need a STAR smog check?
Check your DMV notice. If it specifies a STAR station, that requirement applies to your inspection. Call CAR before booking to confirm that the shop can handle your vehicle and the required inspection type.
Do hybrids and electric cars need smog testing?
Hybrids can require a Smog Check, subject to California’s applicable exemptions. Fully electric vehicles are exempt. Tell us your vehicle’s year, make, model, and fuel type when you contact the shop.
What happens if my vehicle fails?
CAR performs smog-related repairs for vehicles that have failed a smog test. Bring your inspection report so we can review the findings, diagnose the problem, and explain the recommended repairs before you authorize service.
How long should I plan for the appointment?
Ask the team for a time estimate when booking. Timing depends on the vehicle, inspection requirements, shop schedule, and whether diagnosis or repairs are needed.
Will passing the smog test renew my registration?
No. The inspection station sends a passing certificate to DMV electronically, but you still need to complete your registration renewal and pay any fees due.
Your next smog check starts here.
Schedule smog testing in San Luis Obispo for model year 2000 and newer gas vehicles or model year 1998 and newer diesel vehicles. If your vehicle has failed smog, ask CAR about diagnostics and smog-related repairs.
Certified Auto Repair of SLO
393 Marsh St.
San Luis Obispo, CA 93401
Shop hours
Monday–Friday: 8 am–5 pm
Closed on holidays