Auto Repair & Smog Services in San Marcos, CA
STAR Certified Smog Check & Smog Repair
Fast, honest service from ASE-certified technicians in San Marcos, CA. Smog checks, Clean Truck Check, and failed smog auto repair — done right the first time.
Our Services
Keep You Road-Ready
STAR-Certified smog inspections, expert smog repair, and complete auto service — for drivers throughout San Marcos and North County San Diego.
STAR Smog Check & Inspection
Fast, reliable smog inspections at a STAR-Certified station. Required for DMV renewals, title transfers, and out-of-state registrations. Results sent electronically to the DMV.
Smog Repair Services
Failed a smog test? Our ASE-certified technicians diagnose the emissions issue, explain your options, and repair your vehicle so it passes re-inspection.
Clean Truck Check (Diesel)
California-authorized Clean Truck Check inspections and diesel emissions diagnostics that keep heavy-duty vehicles compliant with CARB regulations.
Failed Smog Repair Specialists
Referred to us after a failed inspection elsewhere? We specialize in resolving check-engine, O2 sensor, catalytic converter, EVAP, and exhaust issues that cause smog failures.
Service Details
What’s Included in Each Service
STAR Smog Check & Inspection
STAR Smog Check & Inspection
As a STAR-Certified smog station, we perform the smog inspections required for DMV registration renewals, title transfers, and out-of-state vehicle registrations. Our advanced diagnostic equipment lets us complete your inspection accurately and without unnecessary delays. Once your vehicle passes, we transmit the results electronically to the DMV so your renewal is one less thing to worry about.
Smog Repair Services
Smog Repair Services
If your vehicle fails a smog inspection, we diagnose the underlying emissions problem and offer a clear, cost-effective repair plan. Our ASE-certified technicians use the latest technology to identify the exact fault — then get you back on the road legally and safely, with a passing re-inspection.
Clean Truck Check (Diesel)
Clean Truck Check (Diesel)
California’s Clean Truck Check (CTC) program requires many diesel trucks and commercial vehicles to complete emissions inspections. We are authorized to perform CTC inspections for heavy-duty vehicles in compliance with CARB regulations, help you understand what’s required, and get compliant fast.
Failed Smog Repair Specialists
Failed Smog Repair Specialists
A failed smog test almost always points to a specific emissions issue. We are the go-to shop when other stations can’t pin down the problem. We diagnose the exact cause, quote the fix honestly, and prepare your vehicle for a clean re-inspection.
OUR Process
How We Get You Back on the Road
A simple, transparent process — from booking to keys back in your hand.
Book Your Appointment
Call, text, or stop by. We’ll confirm the service you need — smog check, CTC, or smog repair services — and schedule a time that works for you.
Bring Your Vehicle In
Drop off at 1620 Grand Ave, Ste #5, San Marcos. Most smog checks and Clean Truck Checks complete while you wait.
Diagnose & Explain
Our ASE-certified technicians assess your vehicle honestly, explain what we find, and walk you through your options before any work begins.
Perform the Service
Smog test, CTC inspection, or auto repair — done with STAR-Certified equipment and the latest diagnostic technology.
DMV Submission
If it’s a smog check or CTC, we transmit results electronically to the DMV so your registration renewal is seamless.
Back on the Road
We hand back your keys, invoice you honestly, and follow up if any warranty or re-inspection support is needed.
Need a Smog Check or Auto Repair?
Fast, honest service in San Marcos.
Call us to schedule a STAR-Certified smog check, Clean Truck Check, or smog repair — or just stop by 1620 Grand Ave, Ste #5. ASE-certified technicians, transparent pricing, and DMV-ready results.