Many states require smog checks, more commonly called emissions testing, although the rules vary widely from state to state. The Environmental Protection Agency set forth the regulations on tailpipe emissions for every car and truck sold in the United States. But businesses with fleets or even a single vehicle should think long-term about getting their motorized assets into a cleaner condition. Knowing about some of the basic terms associated with the smog check will help a business that wants to clean up its act on the road and promote a better tomorrow.

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Comprehensive smog check list

Those trying to get vehicles smog checked can benefit from an overall list of factors in getting a clean bill of health.

I recommend: Find out about what a comprehensive smog check list looks like for California at this Passing California Smog Check resource online.

Emissions testing

Most states take their emission testing/smog check cues from standards set by the U.S. E.P.A. This federal agency looks at the nation's air quality and other environmental factors and tries to find fixes.

I recommend: Get more on specific E.P.A. programs for emissions controls on vehicles at this Clean Cars - Clean Air page.

CARB

The CARB or California Air Resource Board is an agency that is proactive in California for working on smog check requirements.

I recommend: Find out more about how CARB standards contribute to smog check testing at the state CARB website. Read more on CARB programs and initiatives at the Auto Blog.

Catalytic converter

This part of the vehicle can often add to a failing smog check grade. The purpose of the catalytic converter is to lower emissions, and a faulty one is a big factor in vehicles that don't pass.

I recommend: Read about the catalytic converter at SmogTips.com.

EVAP and LPFET

Smog checks also routinely cover the testing of a vehicle's fuel evaporative control or EVAP system. The LPFET or Low Pressure Fuel Evaporative Test is set up to cover this aspect of vehicle emissions.

I recommend: Learn more about the LPFET process and why it is done at A-Test Only.

Oxygen sensor

Another potential problem in a smog check is having a wrong fuel mix. The oxygen sensor helps determine how much oxygen goes into the fuel mix, so it's another usual suspect to check in the case of a failing smog grade.

I recommend: Find out about the oxygen sensor and a lot more for a vehicle smog check at AutoMedia.com.

A smog check, or emissions test, is a method for measuring the pollutant emissions of engines. While the Environmental Protection Agency (EPA) sets nationwide standards for emissions checking, participation levels vary greatly state by state. Because they have special dispensation from the ERA, California leads the pack in stringency and frequency of their smog checks, using a comprehensive smog check list to ensure clean air.

Air pollution is a serious environmental and public health issue. Vehicles such as gasoline-powered cars and trucks produce a significant amount of pollution. By ensuring that your company vehicles adhere to the EPA's emissions standards, you will not only be protecting the environment for future generations, but you will also experience economic benefits. Consider the following:

1. Familiarize yourself with your state's emissions testing or smog check requirements.
2. Find a smog check provider, laboratory, or emission testing center that can bring your company vehicles in line with EPA and state standards.
3. Research the business benefits of complying with emissions standards, and getting a regular smog check.
   

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Find out if your state requires a smog check or other emissions testing

Increased concern over the condition of our air has prompted many states to implement vehicle emission checks. Standards from state to state vary, however, so it's important to research smog check information specific to where you live. California is unique in that all areas of the state require some form of smog check certification.

I recommend: The State of California's Bureau of Automotive Repair provides resources to determine your Smog Check area, and guide you through the steps needed to get your company's vehicles in line with state guidelines. Find out emissions standards and testing requirements for other states at FindLaw.

Find smog check providers or laboratories that can meet your emissions testing needs

Whether you just need your company vehicles scheduled for their regular smog checks, or you require advanced emissions testing on a product you designed, there are numerous locations nationwide that can meet your needs. Do your research ahead of time, and make sure that wherever you go, they are experts in their field, and familiar with state and EPA guidelines.

I recommend: For those businesses in California whose vehicles are in need of a smog check, SmogTips offers a searchable list of over 400 SmogTips Certified smog check centers. Their shops have the highest customer service rating in the state. Emission Testing Services provides total emissions testing for companies nationwide. They will provide confidential reports according to state and EPA requirements.

Discover the business benefits of getting a regular smog check

There are more than just environmental benefits to keeping emissions in check. A comparison of costs, fuel savings and emissions benefits of different engines will show that it's not just environmentally smart to keep your vehicle within EPA guidelines, it's also better for your company bank account.

I recommend: SCV Smog Check provides a website where you can look up a vehicle's smog test history by entering in either the license or VIN. Entering the VIN is the preferred method, because the license can change through the life of the vehicle. Armed with this information, calculate the business benefits of reduced emissions and fuel impact with the great tools at the EPA website.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  Regular smog checks should be budgeted as part of your company's regular vehicle upkeep. An engine to burns fuel more efficiently if it is maintained in a proper way. With fuel prices creeping ever higher, you will save your business money in the long run by making your automobiles more competent.

Vehicle emissions testing or smog check programs protect public health by reducing smog and pollution. They are a quick and cost-effective way to ensure that people properly maintain vehicles to prevent the emission of high levels of dangerous gases. You can find smog check information for states with a vehicle emissions testing program online through state government websites.

Smog check pricing and costs vary widely, because different states and counties within a state have different requirements for what a mechanic must test for a smog check. Except in states with state-owned testing stations, the price of a smog check can vary from station to station so it pays to shop around.

1. Know your state's smog check requirements and costs.

2. Learn about available state assistance related to your smog check.

3. Take advantage of free smog check retests.

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Find smog check costs for your state

A certain amount of money per smog check goes directly to the state for administrative costs. The cost of a smog check depends on what testing is necessary, but you can expect to pay between $29 and $80. Your county may require computer diagnostics or other additional testing depending on the model year of your car. Be aware that a smog check obtained in a different state is not likely to be valid in your home state.

I recommend: The Unofficial DMV Guide provides state-by-state information about smog check requirements. Visit SmogTips for a smog check list of costs.

Manage repair costs for vehicles that can't pass a smog check

Waivers may be available to vehicle owners who spend a predetermined amount of money on emissions-related repairs. In California, where smog check requirements are the most strict, there are assistance programs that pay up to $500 for vehicle repair or up to $1000 to retire a vehicle not worth the cost of repairs.

I recommend: Read more about California's Consumer Assistance Program at the Bureau of Automotive Repair. Learn about waivers and other smog check costs at Applus+ Technologies.

Avoid unnecessary costs for a smog check retest

Your smog check provider should offer a free retest if your vehicle fails. In states with state-owned vehicle emissions testing centers, this is automatic, but in other states, you should always check a smog check directory for a station that offers free retests. Otherwise, the cost will be the same for another test after you repair the vehicle. Be aware that only one retest will be free.

I recommend: Information about retests for failing vehicles is available at the Gateway Vehicle Inspection Program at the Missouri Department of Natural Resources. Auto Research Center offers a directory for Southern California consumers to find a smog check test-only station that offers free retests.

A smog check or vehicle emissions test helps ensure that vehicles on the road meet pollution control requirements. This is important because air pollution and smog are serious threats to your health and that of the environment. Many areas have mandatory vehicle emissions testing for registered vehicles. This translates into business and career opportunities for smog check technicians and station owners.

Did you know that only a small percentage of vehicles cause the majority of smog and pollution? Vehicles that fail emissions testing also use more fuel. An efficient vehicle saves you money at the gas pump. A smog check list or smog check directory can help you find smog check repair shops or independent testing stations to perform emissions testing. Here are a few suggestions to increase your level of smog check education and training:

1. Research smog check requirements for your local area.

2. Learn how to become a smog check technician.

3. Know what it takes to open a smog test station.

Action Steps
The best contacts and resources to help you get it done

Learn about smog check requirements

Smog check requirements vary from state to state. Different counties within a state may have different requirements. California has the strictest smog check requirements. What tests you must perform and what constitutes a passing test varies depending on the year of the vehicle. When a vehicle does not pass, the owner must repair the problem and have a retest done.

I recommend: Get answers to your questions about smog check programs from the United States Environmental Protection Agency. Learn about the specifics of California's smog check program at DMV.org.

Become a smog check technician

State requirements for who can perform a smog check vary. Experience working on automotive computer systems and computer systems repair is necessary to be able to perform smog checks accurately. You may need additional training to become a smog check technician. In some states, there are college-level programs in emissions testing.

I recommend: Learn what it takes to become a licensed smog check technician in California at Smogsite.com. Automotive Training Schools offers classes for those interested in becoming certified smog check technicians.

Make your station a smog check provider

Smog check stations test vehicle emissions according to applicable requirements using high-tech computer testing equipment. Some stations are test-only facilities. A test-only facility doesn't perform vehicle repairs, but other smog check stations can test and repair vehicles. Requirements for becoming a smog check station vary depending on your state and county.

I recommend: Discover how to become a licensed smog check station at California Department of Consumer Affairs Bureau of Automotive Repair. Learn more about vehicle emissions testing station requirements at Missouri Department of Natural Resources Gateway Vehicle Inspection Program.