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US Smog Check is dedicated to providing honest answers, transparent prices, and a job done right the first time around. Our friendly, helpful, and experienced mechanics will put you at ease. Our policy is to provide you with outstanding customer service. Come in and see what we can do for you.

Services: Service


We provide the official SMOG CHECK for all vehicles including trucks, SUVs and Gross Polluters using our cutting edge BAR-97 Emission Inspection System (EIS) required by the State of California.  The inspection includes a visual, functional and tail-pipe emissions test.  Certain vehicles emissions testing require the use of a dynometer for Acceleration Simulation Mode (ASM), or loaded-mode test.  The ASM simulates actual driving conditions and allows for more precise testing for CO, HC and NOx - the three most harmful pollutants emitted by motor vehicles.

Once the SMOG CHECK is completed we will provide you with a Vehicle Inspection Report (VIR) which is also transmitted to the DMV for your vehicle records.  Once your vehicle passes, our system will automatically transmit your Smog Certificate to the DMV electronically - which saves you time.


Why gamble with your vehicle's DMV registration payment by sending it in the mail?  In addition you have to wait for your registration tags via snail mail.

We can process your DMV registration payment and you walk out with your vehicle tags in a quick cost efficient manner.  Our Auto Registration system is connected to the DMV and we are licensed to process renewal registrations.  Just ask how we can help you avoid a long wait at the local DMV!


  • We can smog any vehicle!  RV's, Passenger, Trucks, Oversized, Test & Repair, Gross Polluters, Change of Ownership, Initial California Registration, Diesels & Test Only directed vehicles.

  • We are a STAR certified Test Only Smog station.

  • We don't sell repairs! Fast unbiased smog checks.  If your vehicle fails -  we offer a FREE retests for all 1996 and newer vehicles.  In addition, we offer a discounted retest on most 1995 and older vehicles if it happens to fail.

  • We can register your vehicle at our location instantly.Walk out with your DMV decals today.

  • We are open 7 days a week.

  • Drive thru service bays for fast smog checks.

  • Clean comfortable climate controlled customer lounge , free coffee & a TV.

  • We electronically send your smog results to the DMV.

  • We are located in the Chino Spectrum Towne Center - behind KOHLS & across from LA Fitness.

  • Shop or work out while you smog

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