Q. What is an Enhanced Test? In parts of California where smog pollution is higher, vehicle owners are now required to complete an "Enhanced" version of California's smog test. The "Enhanced" smog test requires your vehicle to be driven on a dynamometer while the smog machine collects emissions samples from the tailpipe. The "Enhanced" smog test has been proven to retrieve a more accurate sample of a vehicle's emissions output, then it's predecessor, the "Basic" smog test. The "Basic" smog test requires vehicles to be tested, only at idle and 2500 rpm "Basic" smog test vehicles do not need to be driven on a dynamometer.
Q. What is a Basic Test? Counties in California with low smog pollution require the "Basic" smog test. If your county has been added to the "Enhanced" smog test requirement list, the smog stations in your local area will have the necessary equipment to test your vehicle. No specific action will be required by the vehicle owner.
Q. Is my car basic or enhanced? Check this website to determine which smog your vehicle requires.
Click Here
Q. Do I need an appointment? Yes, Please call us at 682-0101.

How is a Smog Test Conducted?


The California Enhanced smog check inspection is conducted in 3 distinct parts.

First is a visual inspection to confirm that the emission control devices installed by the manufacturer are in place and properly connected.

Second elements are the functional portions of the test, which consist of:

  1. A test to see if the dash mounted "check engine or service engine soon" warning light is working properly ie: lights up then goes off while engine is running AND is NOT continuously on.
  2. Check that timing is to specs (if applicable)
  3. A check of the gas cap will hold pressure and contain the fuel vapors within the void space at the top of the fuel tank and, for most pre 1996 model year vehicles, a pressure test of the fuel tank and EVAP system.

Thirdly is the emissions portion - for a basic test- a probe is placed in the tailpipe to measure the emitted emissions at 2500rpm and at idle. HC (hydrocarbons) and Co (Carbon monoxide) are measured - for an enhanced test- the vehicle is placed on a special testing device called a dyno and the drive wheels are rotated and an emission reading is taken by a probe placed in the tailpipe of the vehicle. HC(hydrocarbons), Co(Carbon monoxide) and NOX(Nitrogen oxides) are measured.

The information gathered is sent to an analyzer and the results of the inspection are then electronically transmitted to the Bureau of Automotive Repair Database and then on to the DMV.

If passing, an electronic certificate is issued for that vehicle.

If the vehicle fails to pass, the technician or another person will explain the cause of the failure to the owner and inform as to the various options available to remedy the failure.



A CHECK ENGINE LIGHT must be functioning properly



155 W Alamar Ave
Santa Barbara, CA 93105

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