Mobile Smog Repair · Los Angeles

Fix It. Pass It. Same Day.

Failed your smog test? Don't drive all over LA chasing fixes. We come to you, diagnose the issue, repair it on the spot, and hand your car back with a fresh smog certificate — usually the same day.

CA ARD Licensed
Same-Day Service
Mobile · LA County
Transparent Pricing
Fail smog. Drive to a mechanic. Pay to diagnose. Drive to get parts. Come back for install. Drive back to smog.
→ We handle all of it. One stop. One day.

How it Works

Three steps. No shuffling between shops. No wasted days off work.

01

Send Us Your Report

Text or call with a photo of your failed smog report. We review the codes and give you a transparent diagnostic plan — usually within the hour.

02

We Come & Fix It

We meet you at home, work, or wherever your car is. Full diagnostic, parts sourced, repair done right the first time by a licensed ARD mechanic.

03

Smog Cert in Hand

Once the car is ready, we take it for re-test at a licensed station and return it to you with the certificate — cleared to register the same day.

Smog Failures
We Fix Daily

If your car failed because of any of these, we've probably fixed 50 of them this year. If it's something weirder, we'll find it.

Check Engine Light

Any P-code diagnosis — we pull it, interpret it, and fix the root cause (not just clear the light).

O2 Sensor Replacement

The #1 cause of smog failure. Upstream, downstream, bank 1, bank 2 — we've got the tools and the parts.

Catalytic Converters

CARB-compliant replacements only. We source, install, and verify — no federal cats, no shortcuts.

EVAP Leak Detection

Smoke-machine leak testing. Gas caps, purge valves, vent solenoids, cracked hoses — we find what others miss.

Readiness Monitors

Monitor won't set? We know the exact drive cycles for every make and model to get you ready for re-test.

EGR & Emissions

EGR valves, MAF sensors, purge systems — the unglamorous stuff that quietly tanks your smog test.

Built for
People Who
Don't Have Time.

You've got a job. Kids. A life. We're built around that — not around making you sit in a waiting room reading a 2019 magazine.

  • 01

    Licensed in California

    Registered ARD (Automotive Repair Dealer) with the Bureau of Automotive Repair. Fully insured. Everything by the book.

  • 02

    We Come to You

    Home, office, apartment complex, your mom's driveway — wherever the car is, we meet you there.

  • 03

    Upfront Estimates

    Written estimate before any work starts. No "oh by the way" surprises. California law, and just good sense.

  • 04

    Same-Day When Possible

    Most smog fixes are same-day jobs. For parts-heavy repairs (cat converters, etc.) we're straight with you on the timeline.

All Over LA.

Based in Los Angeles and serving the whole LA County area. If you're not sure we cover your spot, just text us.

Downtown Hollywood Koreatown Silverlake Echo Park Mid-City West LA Culver City Santa Monica Venice Pasadena Glendale Burbank San Fernando Valley Long Beach South Bay East LA Inglewood

You Might Be Wondering.

You send us a text with a photo of your failed smog report and your ZIP. We'll reply with a time and a price range for the diagnostic. We come to your location, plug in, find the fault, quote the repair, and — once you approve — we do the work. When the car is ready, we drive it to a licensed smog station for the re-test and return it to you with the certificate.

Yes. Fast Lane is a registered Automotive Repair Dealer with the California Bureau of Automotive Repair (BAR). We follow CA estimate and invoice laws on every job, we use CARB-compliant parts, and we're fully insured for your vehicle while it's in our care.

Diagnostic fee starts at $120 and rolls into the repair cost if you proceed. Repairs themselves depend entirely on what's wrong — O2 sensors, EVAP repairs, and light work usually land in the $200–$500 range. Catalytic converters are pricier (that's just parts). You get a written estimate before any work begins. No surprises.

Most of the time, yes. Sensor swaps, leak repairs, gas cap / purge valve issues — all same-day. Bigger jobs like cat converters, ECU-related issues, or readiness monitors that need a long drive cycle can take 1–3 days. We'll tell you straight once we diagnose.

Pretty much any gas passenger vehicle OBD-II and newer (1996+). We handle domestic, Japanese, Korean, and European makes. Diesel smog is a specialty — message us first to confirm. We don't currently work on motorcycles or vehicles needing smog exemption paperwork.

Then we didn't do our job. We work with you to find the actual cause and make it right. All repairs come with a written warranty on parts and labor — details get spelled out on your estimate before work starts.

Book Your Appointment.

Tell us about your car and what's going on. We'll text or call you back within 30 minutes during business hours with a quote and timing.

  • Fast response. Most requests get a callback within 30 minutes.
  • We come to you. Home, work, wherever the car is.
  • No charge to ask. Estimates are free. You only pay if we do the work.
  • CA ARD Licensed · Fully insured · By the book, every time.
2-Minute Form

Start Your Booking

Fill out a quick form with your car info and what's going on. We'll get back to you within 30 minutes.

Book Appointment

Prefer to talk? Call or text us directly.

Ready to Get This Over With?

Book Appointment