Indiana Vehicle Emissions Testing

License Plates play an important role in vehicle identification and registration compliance, but Indiana vehicle owners may have separate requirements related to emissions testing. Indiana Vehicle Emissions Testing applies in designated areas where qualifying vehicles must meet state and local emissions standards before certain registration services can be completed. Knowing whether your vehicle falls under the testing program can help you prepare the required documents, complete testing on time, and keep your registration current without unnecessary delays.

License Plates can remain valid only when the vehicle meets applicable registration requirements, which may include emissions testing for qualifying vehicles in designated Indiana counties. Testing requirements can depend on the vehicle’s location, model year, fuel type, and registration circumstances. Vehicle owners should check the current Indiana emissions program requirements, testing locations, applicable exemptions, and registration deadlines before scheduling a test. Keeping inspection or testing records available can make it easier to complete related vehicle registration tasks.

How to Prepare for an Indiana Emissions Test

Proper preparation can help identify emissions-related issues before an Indiana emissions test. Focus on the vehicle’s emissions system, check-engine light, readiness monitors, gas cap, exhaust system, and required emissions equipment. Simple checks can help you avoid arriving for testing with a known warning or an unresolved emissions problem.

• Indiana BMV – Vehicle Emissions Testing Program:
  • https://www.in.gov/bmv/registration-plates/vehicle-emissions-testing-program/

• Eligible vehicles in Lake and Porter counties must complete an emissions test and tampering inspection every two years.
• The requirement generally applies to vehicles manufactured after 1975 with a GVWR of 9,000 pounds or less.
• Vehicles with odd-numbered model years are tested in odd-numbered years, while vehicles with even-numbered model years are tested in even-numbered years. The latest four model years and qualifying antique vehicles are exempt from testing.
• Drivers should bring their Indiana Vehicle Registration Renewal notice or current registration to the testing station.
• An emissions test number may be required when renewing registration online.
• If a vehicle is with a college student outside Indiana or is regularly outside the state, the BMV recommends early testing.
• A vehicle can be tested starting in October before its scheduled testing year.

Who Needs an Indiana Emissions Test?

Indiana vehicle emissions testing applies to specific vehicles based on their registration county, model year, and weight rating. The Indiana BMV states that eligible vehicles registered in Lake and Porter counties must complete emissions testing and tampering inspections every two years. Checking these requirements before registration renewal can help vehicle owners determine whether an Indiana emissions inspection is required.

Vehicles Registered in Lake County

Vehicles registered in Lake County can be subject to Indiana emissions testing when they meet the applicable model-year and GVWR requirements. The BMV requires eligible vehicles to complete an emissions test and tampering inspection every two years. The program covers vehicles manufactured after 1975 with a GVWR of 9,000 pounds or less. Vehicle owners in Lake County should check their registration information and model year before assuming a test is required.

Vehicles Registered in Porter County

Porter County vehicles are subject to the same core Indiana emissions testing requirements. Eligible vehicles must undergo emissions testing and tampering inspection every two years when they meet the applicable age and weight conditions. The testing program is part of Indiana’s vehicle emissions program for Northwest Indiana. Owners can confirm testing eligibility through the BMV’s current requirements before completing registration renewal or visiting a testing station.

Vehicle Age and GVWR Requirements

Vehicle age and GVWR are key factors in testing eligibility. Indiana’s BMV states that vehicles manufactured after 1975 with a GVWR of 9,000 pounds or less are subject to the program when registered in Lake or Porter counties. The four newest model years are exempt, along with qualifying antique vehicles. Testing follows the model year: odd-numbered model-year vehicles are tested in odd-numbered years, and even-numbered model-year vehicles are tested in even-numbered years. For example, a 2009 model-year vehicle follows the odd-year testing cycle.

When Is an Indiana Emissions Test Required?

Indiana emissions testing is required for eligible vehicles based on their registration location and model year. The Indiana BMV requires qualifying vehicles in Lake and Porter counties to follow a recurring testing schedule. Knowing the testing year can help vehicle owners plan their emissions inspection before registration renewal.

Every-Two-Year Testing Schedule

Indiana emissions testing follows a biennial, or every-two-year, schedule for eligible vehicles. A vehicle that falls under the program is tested during its assigned testing year rather than every year. The schedule is based on the vehicle’s model year, with odd-numbered and even-numbered vehicles following different cycles. Vehicle owners should check their registration information and BMV requirements to confirm when their next emissions test is due. Testing can be completed before the scheduled year begins in October, giving eligible owners an earlier opportunity to complete the requirement.

Odd-Year and Even-Year Vehicles

The Indiana emissions testing schedule is based on the vehicle’s model year. Vehicles with an odd-numbered model year are tested during odd-numbered years, while vehicles with an even-numbered model year are tested during even-numbered years.

For example:

• A 2019 model-year vehicle follows the odd-year testing cycle.
• A 2020 model-year vehicle follows the even-year testing cycle.
• A 2021 model-year vehicle follows the odd-year testing cycle.
• A 2022 model-year vehicle follows the even-year testing cycle.

This cycle helps vehicle owners identify the appropriate testing year without treating emissions testing as an annual requirement.

When the Four Newest Model Years Are Exempt

The Indiana BMV exempts the four newest model years from the emissions testing requirement. This exemption is based on the vehicle’s model year rather than simply the vehicle’s registration date. Once a vehicle falls outside the four-newest-model-year exemption, other eligibility factors, including its registration county and applicable vehicle requirements, determine whether emissions testing is required.

Which Indiana Counties Require Emissions Testing?

Indiana emissions testing is limited to specific areas under the state’s vehicle emissions program. The Indiana BMV identifies Lake County and Porter County as the counties where eligible registered vehicles must complete emissions testing and tampering inspections. The registration county is important when determining whether a vehicle falls within the testing area. Driving through one of these counties does not, by itself, place a vehicle under the emissions program.

Lake County

Lake County is one of the two Indiana counties included in the state’s mandatory emissions program. Eligible vehicles registered in Lake County must complete the required emissions test and tampering inspection according to the applicable testing schedule. Vehicle owners should check their registration county, model year, and vehicle specifications when determining testing eligibility. The requirement is connected with vehicle registration in the testing area rather than simply where a vehicle happens to be driven.

Porter County

Porter County is the second Indiana county included in the mandatory emissions testing program. Eligible vehicles registered in Porter County must follow the applicable emissions testing schedule and complete the required inspection. Registration status, model year, and vehicle specifications help determine whether a particular vehicle falls under the program. Owners can check current Indiana BMV information for testing requirements before registration renewal or a visit to an approved testing location.

What About the Other Indiana Counties?

The mandatory Indiana emissions testing program does not apply statewide. Vehicles registered in other Indiana counties are not required to undergo this specific program simply because they are driven through, used for work in, or temporarily located in Lake County or Porter County. The key factor is the vehicle’s registration county and whether it meets the program’s eligibility requirements. Vehicle owners should check their current registration information and BMV requirements if their registration location changes.

isse upr waleeee information ma add krdo

What Happens During an Indiana Vehicle Emissions Test?

An Indiana vehicle emissions test varies by the vehicle’s model year. Clean Air Car Check uses different testing methods for newer and older vehicles, including an OBD-II test, I/M 93 dynamometer test, and single-speed idle test. The inspection can check emissions-related systems, tailpipe emissions, gas-cap sealing, and required emissions equipment. Eligible vehicles may receive a tampering inspection as part of the process.

Registration and Vehicle Information Check

Before testing, the vehicle is identified and the required registration information is checked. The Indiana BMV states that drivers should bring their Indiana Vehicle Registration Renewal notice or current registration to the testing station. The testing method depends on the vehicle’s model year and eligibility under Indiana’s emissions program.

OBD-II Test for 1996 and Newer Vehicles

Vehicles from 1996 and newer use an On-Board Diagnostics (OBD-II) test. A testing adapter connects to the vehicle’s onboard computer and retrieves information about emissions-related systems. The system can store diagnostic trouble codes (DTCs) when it detects certain problems. The test checks readiness monitors, which indicate whether required emissions-system self-checks have completed.

Key points include:

• Diagnostic trouble codes (DTCs) are checked through the vehicle’s onboard computer.
• Readiness monitors show whether emissions-system self-checks have completed.
• The system can identify emissions-related faults involving components such as the oxygen sensor and other emissions equipment.

An illuminated Check Engine light or certain emissions-related codes can result in a failed test. An incomplete readiness monitor may result in a rejected test rather than an immediate failure.

I/M 93 Test for 1981–1995 Vehicles

Vehicles from 1981 through 1995 receive an Inspection and Maintenance (I/M 93) test. The vehicle is placed on a dynamometer, which simulates driving conditions while a probe collects exhaust from the tailpipe. The emissions sample is then analyzed for applicable pollutants.

During this test:

• The vehicle operates on a dynamometer.
• A tailpipe probe measures exhaust emissions.
• The test evaluates pollutants such as hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx).

Single-Speed Idle Test for 1976–1980 Vehicles

Vehicles from 1976 through 1980 receive a single-speed idle test. A probe is placed in the tailpipe to collect an exhaust sample while the engine operates at idle. The collected sample is analyzed for applicable emissions.

Important points include:

• A probe collects exhaust from the tailpipe.
• Testing takes place while the engine operates at idle.
• The sample is checked for hydrocarbons and carbon monoxide.

Gas Cap and Tampering Inspection

The inspection includes a gas-cap pressure test to check whether the fuel cap seals properly and prevents fuel vapors from escaping. Clean Air Car Check also checks required emissions control equipment for signs of tampering.

The inspection can include:

• Checking the gas cap for proper sealing.
• Inspecting required emissions control equipment for signs of tampering.
• Checking components such as the catalytic converter for proper installation and connection.

How Much Does Indiana Emissions Testing Cost?

• Standard emissions test: Do not publish a fixed price unless the current official source confirms it.
• State testing charge: Check the latest Indiana BMV information for the current testing-cost details.
• BMV partner services: Optional services available at participating testing locations may have separate charges.
• Convenience fees: BMV transactions handled through partner locations can include additional convenience fees.
• Before visiting: Check the current station information, available services, and applicable charges.
• Best source: Use the official Indiana BMV emissions program information and current Clean Air Car Check details before scheduling a visit.

Where Can You Get an Indiana Emissions Test?

Indiana emissions testing is available through Clean Air Car Check stations serving eligible vehicles in Lake and Porter counties. The Indiana BMV currently lists stations in several cities across the testing area. Before visiting, check the current station information for location, hours, and available services, since these details can change.

Clean Air Car Check Testing Stations

Clean Air Car Check operates the emissions testing stations used for Indiana’s emissions program in Lake and Porter counties. The Indiana BMV locations provides a current station list with individual locations, contact information, hours, and available BMV partner services. Some locations offer registration renewal services, which may involve a convenience fee separate from state or BMV charges.

Cities With Testing Stations

The Indiana BMV currently lists Clean Air Car Check stations in these areas:

• Crown Point
• Gary
• Griffith
• Hammond
• Hobart
• Portage
• Valparaiso

These locations cover the Lake and Porter County testing area. Station hours and services can differ, so check the current BMV listing before making a trip. For example, the BMV lists the Crown Point station at 755 North Industrial Boulevard and the Portage station at 5777 Melton Road

Indiana Emissions Test Waivers and Extensions

Indiana emissions testing rules provide certain options when an eligible vehicle cannot complete the normal testing process because of emissions-related repairs or because the vehicle is being operated outside its registration area. These options are different from ordinary testing exemptions. A waiver is connected with qualifying emissions repairs after a failed test, while an extension can address situations where a vehicle registered in Lake or Porter County is being operated elsewhere.

Emissions Repair Waiver

An Indiana emissions repair waiver may be available after an eligible vehicle fails a retest following qualifying emissions-related repairs. The repairs must meet applicable requirements, and receipts may be reviewed at the testing site. For a minimum-expenditure waiver, the Indiana rules specify different amounts based on model year:

Out-of-State Extension

A vehicle registered in Lake or Porter County but operated in another emissions-testing area may qualify for different testing arrangements under Indiana’s administrative rules. Indiana’s rules address vehicles that are registered in the testing counties but operated elsewhere and allow certain testing arrangements or extensions. The applicable requirements depend on the vehicle’s location and circumstances. Vehicle owners should check the current requirements before relying on an out-of-state testing arrangement.

College Students, Military and Vehicles Kept Outside Indiana

The BMV recommends early testing when a vehicle is being used by a college student away at school or kept in another state for part of the year. Eligible vehicles can be tested as early as October of the year before they are due. For military personnel or other temporary out-of-state situations, the applicable requirements should be checked for the specific vehicle and circumstances.

How Indiana Emissions Testing Affects Registration Renewal

For eligible vehicles registered in Lake or Porter counties, an Indiana vehicle emissions test must be completed before registration renewal when the vehicle is due for testing. The Indiana BMV confirms that drivers cannot renew first and complete the emissions test later when testing is required. Passing the emissions inspection allows the registration renewal process to continue through the available BMV channels.

Emissions Test Before Registration Renewal

If your vehicle is due for Indiana emissions testing, complete the test before renewing its vehicle registration. The BMV states that eligible Lake and Porter County vehicles must pass the required emissions test before renewal. Bring your Indiana Vehicle Registration Renewal notice or current registration to the testing station. After the test is completed, the emissions record can be used during the registration renewal process.

Finding Your Emissions Test Number

When renewing online through myBMV, the system requests an emissions test number for applicable vehicles. The Indiana BMV states that this number can be found at the bottom right of the Vehicle Inspection Report, under “BMV Online Emissions No.” Keep the inspection report after testing so you have the number available when completing your renewal.

Renewing Registration After Passing

After successfully completing the required emissions test, eligible drivers can proceed with registration renewal through myBMV, a BMV Connect kiosk, a BMV branch, or other available renewal methods. Online registration renewal is available through myBMV for eligible vehicles. The BMV also states that registration must be renewed by the scheduled expiration date to avoid the applicable administrative penalty.

Frequently Asked Questions

Indiana Vehicle Emissions Testing FAQs answer common questions about testing requirements, eligible counties, testing schedules, exemptions, electric vehicles, and registration renewal. These quick answers can help vehicle owners identify whether an emissions inspection applies to their vehicle and what steps may follow after testing.

Does Indiana require emissions testing?

Yes. Indiana requires emissions testing for eligible vehicles registered in Lake and Porter counties. The program generally covers vehicles manufactured after 1975 with a GVWR of 9,000 pounds or less. Qualifying vehicles must complete emissions testing and tampering inspections according to the applicable testing cycle.

What counties in Indiana require emissions testing?

Lake County and Porter County are the two Indiana counties included in the mandatory vehicle emissions program. The requirement is based on the vehicle’s registration county and eligibility, rather than simply where the vehicle is driven.

How often is an Indiana emissions test required?

Eligible vehicles generally undergo an Indiana emissions test every two years. Odd-numbered model-year vehicles are tested during odd-numbered years, while even-numbered model-year vehicles are tested during even-numbered years. The four newest model years are exempt under the BMV program.

What vehicles are exempt from Indiana emissions testing?

Indiana rules list several exemptions, including electric vehicles, motorcycles, diesel vehicles, qualifying antique vehicles, show vehicles, recreational vehicles, heavy-duty vehicles with a GVWR of 9,000 pounds or more, and vehicles with engine displacement under 200 cubic centimeters. The four newest model years are also exempt under the BMV testing program.

Do electric vehicles need an Indiana emissions test?

No. Indiana’s emissions testing rules specifically exempt electric vehicles and vehicles certified by the department as electric from the testing requirements. This exemption applies to the emissions program described in the Indiana Administrative Code.