Laws / 7.20.2026

Illinois Car Inspection Laws

Duncan Law Group
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Motorists in Illinois have a duty to drive safely and follow all traffic laws. However, these obligations do not begin and end behind the wheel. Drivers must also take their cars to an Illinois Air Team testing station or repair shop for emissions checkups and comply with county inspection requirements. Failure to follow Illinois car inspection laws can affect registration renewal and compliance.

Injured in an accident involving a poorly maintained vehicle? A Chicago car accident lawyer at Duncan Law Group can help you investigate what happened, determine whether negligent maintenance played a role, and pursue compensation from the at-fault driver. Contact our firm at (312) 202-3283 today for a free consultation.

Who Is Required to Receive an Emissions Inspection in Illinois?

In Illinois, most 1996 and newer gasoline-powered passenger vehicles are subject to emissions testing after they are four years old.

Testing applies to the Chicago and Metro East areas, including:

  • Cook
  • Dupage
  • Lake
  • Kane
  • Kendall
  • McHenry
  • Will
  • Madison
  • Monroe
  • St. Clair

If you recently moved to Illinois, you should register your vehicle with the state and determine whether it requires emissions testing by checking your renewal notice or using the Illinois Air Team Vehicle Eligibility Check tool.

How Often Do You Need an Emissions Test in Illinois?

In Illinois, emissions inspections are generally required every two years beginning when a vehicle is four model years old. New Illinois residents must register the vehicle first and then wait for a testing notice before getting their first emissions inspection.

Common Vehicle Inspection Exemptions in Illinois

Not every vehicle in Illinois must undergo emissions testing, and eligibility depends on the vehicle type, model year, fuel type, and location. Illinois Air Team states that most 1996 and newer gasoline-powered passenger vehicles are subject to testing after they are four years old, but several categories of vehicles are excluded.

Common exemptions include:

  • Diesel-powered vehicles
  • Fully electric vehicles
  • Motorcycles
  • Vehicles made in 1967 or earlier
  • Antique or custom vehicles
  • Vehicles registered in another state and compliant with that state’s emissions requirements

Vehicle inspection and emissions rules matter because they help keep unsafe or poorly maintained vehicles off the road, protecting everyone who travels on them. If you were injured in a crash involving a dangerous vehicle, Duncan Law Group can help investigate the cause of the accident and seek the compensation available under Illinois law. 

Where to Get an Emissions Test in Illinois

Illinois drivers can use the Illinois Air Team Testing Site and Repair Shop Locator to find a nearby testing station or repair shop, view wait times, and get directions. Illinois Air Team also provides self-service kiosks and mobile testing units in the Chicago area.

Drivers visiting a testing station may find it helpful to first verify that their vehicle is due for testing and check estimated wait times through the Illinois Air Team, which recommends doing so, particularly during busier periods such as the beginning or end of the month and Saturdays. 

What Happens If You Fail a Vehicle Inspection?

During an emissions test, the inspector will inform you whether you passed or failed the inspection. If you failed the inspection, you must repair and retest the vehicle. The inspector will recommend a technician who can help repair it.

In some cases, you may receive a rejection. A rejection is not an automatic failure. It simply means that you are unable to receive a proper emissions test for some reason, such as bringing in a vehicle too early or having a vehicle that is exempt from testing. Your inspector will recommend next steps.

What to Do If You Are Injured by a Dangerous Vehicle

While car inspections are required in Illinois, not all drivers comply with these requirements. Additionally, vehicles in poor condition are more likely to malfunction and become impossible to control, putting everyone on the road at risk of an accident.

Older cars and cars that are in disrepair can be very dangerous. Debris may fall from the vehicle, causing hazards on the road. A car may malfunction and spin out of control, leading to a multi-car pileup.

If you are injured in an accident caused by a driver who failed to properly maintain their vehicle, you may have a legal claim. Illinois follows a fault-based system, meaning that negligent drivers who fail to comply with state laws are financially responsible for any accidents they cause. In these situations, you could file a lawsuit or insurance claim against the driver.

A Chicago car accident lawyer can represent your claim and help you secure the compensation that you may be entitled to. After your accident, contact Duncan Law Group at (312) 202-3283 as soon as possible to discuss your case and legal options.

How Our Chicago Car Accident Lawyers Can Help

If you were hurt in a crash involving an unsafe or poorly maintained vehicle, legal representation can make an impactful difference in the outcome of your case. A lawyer can investigate whether the other driver failed to maintain the vehicle properly and use that evidence to support your injury claim.

A Chicago car accident attorney can help by:

  • Reviewing the facts of your accident and explaining whether you may have a valid claim.
  • Gathering evidence such as the police report, witness statements, repair records, photographs, and medical documentation.
  • Investigating whether defective maintenance, unrepaired mechanical issues, or ignored warning signs contributed to the crash.
  • Handling settlement negotiations with the insurance company.
  • Filing a lawsuit and representing you in court if the insurer refuses to offer fair compensation.

Contact a Chicago Car Accident Lawyer Today

Unsafe vehicles can create serious hazards on Illinois roads. If you were hurt in a collision involving a dangerous or improperly maintained car, truck, or SUV, the Chicago car accident lawyers at Duncan Law Group can help you seek compensation and hold the negligent driver accountable. Contact us online or give us a call at (312) 202-3283 to speak with a knowledgeable car accident attorney today.

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