Maryland emissions testing is required every two years for most gasoline-powered vehicles registered in 14 designated counties, under the state’s Vehicle Emissions Inspection Program (VEIP). The program is run jointly by the Maryland Department of the Environment and the Motor Vehicle Administration and covers roughly 3 million vehicles. Miss your deadline and you’ll pick up late fees, a registration suspension, and eventually lose your plates.
Who Has to Test
VEIP applies only if your vehicle is registered in one of these 14 jurisdictions: Anne Arundel, Baltimore City, Baltimore County, Calvert, Carroll, Cecil, Charles, Frederick, Harford, Howard, Montgomery, Prince George’s, Queen Anne’s, and Washington. Register your car anywhere else in Maryland and you’re outside the program entirely.1Maryland Department of Transportation Motor Vehicle Administration. VEIP – General Requirements
Within those counties, the program covers gasoline-powered vehicles with a gross vehicle weight up to 26,000 pounds. That’s broader than passenger cars alone. The specific test depends on weight and model year:
- 8,500 lbs or less, model year 1996 and newer: On-Board Diagnostics (OBD) test.
- 8,501 to 14,000 lbs, model year 2008 and newer: OBD test.
- 8,501 to 14,000 lbs, model year 1977 to 2007: idle exhaust test, catalytic converter check, and gas cap leak test.
- 14,001 to 26,000 lbs, model year 1977 and newer: idle exhaust test, catalytic converter check, and gas cap leak test.
Vehicles model year 1995 or older weighing under 8,500 pounds, and anything over 26,000 pounds, are outside the program.1Maryland Department of Transportation Motor Vehicle Administration. VEIP – General Requirements
Hybrids are not exempt. Because they still burn gasoline, they test on the standard schedule. Vehicles powered solely by electricity or diesel are exempt.
What the Test Involves
For most cars on the road today, the test is quick. A technician plugs a diagnostic reader into your OBD-II port and the vehicle’s computer reports whether emissions components like the catalytic converter and oxygen sensors are functioning. Faults get flagged. No treadmill, no tailpipe probe.2Maryland Department of the Environment. VEIP About Our Program
Older or heavier vehicles that don’t support OBD-II get an idle exhaust emissions test, a catalytic converter inspection, and a gas cap leak test that checks for fuel vapor escaping.
Testing costs $30 at a full-service station or $26 at a self-service kiosk, which takes credit cards only.3Maryland Motor Vehicle Administration. Maryland Vehicle Emissions Inspection Program The 24-hour kiosks operate in nine counties: Anne Arundel, Baltimore City, Baltimore County, Charles, Frederick, Harford, Howard, Montgomery, and Prince George’s. They’re busiest between 9 a.m. and 6 p.m., particularly Fridays and Saturdays, so early morning or late evening visits usually mean shorter waits.4Maryland Department of Transportation Motor Vehicle Administration. Vehicle Emissions Testing Stations and 24-hour Kiosk Testing Locations
When You’ll Be Notified
The MVA sends a test notice about 11 weeks ahead of your due date if you have an email address on file, or 6 to 8 weeks ahead by U.S. mail if you don’t.1Maryland Department of Transportation Motor Vehicle Administration. VEIP – General Requirements Don’t count on the notice reaching you. If you know your two-year window is coming up and nothing has arrived, check your status through the MVA’s online portal.
Exemptions and Waivers
The list of vehicles that skip testing is longer than most owners realize.
The Six-Year New Vehicle Exemption
If you’re the original purchaser of a 2019 or newer vehicle, your first test isn’t due until 72 months after titling and registration. After that, you shift to the regular two-year cycle. The rule also applies to lease buyouts where you were the original lessee.5Maryland Department of Transportation Motor Vehicle Administration. Six-Year Emission Testing
The exemption does not travel with the vehicle. If you buy a nearly-new car used, you enter the two-year cycle three months after registration regardless of model year.5Maryland Department of Transportation Motor Vehicle Administration. Six-Year Emission Testing
Other Exempt Categories
- Electric and diesel-only vehicles.
- Motorcycles, school buses, and passenger buses.
- Farm trucks, farm truck tractors, and farm area vehicles.
- Federal military vehicles used for tactical, combat, or relief operations.
- Fire apparatus and ambulances owned or leased by state, county, municipal, or volunteer departments.
- Class N street rods.
- Historic vehicles (Class L). As of July 2025, this now means model year 1999 or older, replacing the prior “at least 20 years old” rule.6Maryland Department of Transportation Motor Vehicle Administration. Industry Bulletin – HB 352 (BRFA) (2025) Changes
Senior Citizen Waiver
Owners 70 or older who drive fewer than 5,000 miles a year can request a waiver for the rest of their two-year cycle. If more than one person is on the registration, every owner has to be 70 and meet the mileage cap. Miles driven for a nonprofit can be deducted from your annual total with written certification on the organization’s letterhead. Recertification is required every two years.7Maryland Department of Transportation Motor Vehicle Administration. VEIP Waiver Information
Active-Duty Military
Service members deployed outside the U.S. or stationed in a state without an emissions program can get a waiver covering the rest of their current cycle. You request it online with a Certified Statement (form EP-009) plus the waiver request.3Maryland Motor Vehicle Administration. Maryland Vehicle Emissions Inspection Program
If Your Vehicle Fails
A failed test starts a 120-day clock to repair the vehicle and return for a retest. The first retest after repairs is free. After that, each retest costs $30, and if you blow past the deadline on your diagnostic report, a $30 late fee is added.8Maryland Department of Transportation Motor Vehicle Administration. If Your Vehicle Didn’t Pass
One detail that trips people up: if the failure involved the catalytic converter or evaporative system, the OBD-II monitor for that system has to show “ready” when you come back. Mechanics generally recommend driving about a week after the repair so the monitors can complete their cycles.9Maryland Department of the Environment. OBD II Readiness Monitor VEIP Requirements
Repair Waiver
If your vehicle simply won’t pass despite genuine repair attempts, Maryland offers a repair waiver good for one two-year cycle. The minimum spend on qualifying emissions-related repairs is $450, and the work has to be completed within 120 days of the failed test.2Maryland Department of the Environment. VEIP About Our Program
To qualify:
- Any applicable warranty has been used or the manufacturer or dealer has denied coverage in writing.
- Repairs were done by a recognized technician and matched the cause of failure.
- Emissions equipment has not been removed or tampered with, and the vehicle hasn’t been misfueled.
The waiver doesn’t cover exhaust components unrelated to emissions or repairs needed because someone stripped out emissions equipment. Submit proof of what you paid with the waiver application.10Justia. Maryland Code of Regulations 11.14.08.07 – Waivers
Penalties for Missing Your Deadline
Miss the test date and a $30 late fee attaches. Another $30 gets added every four weeks you remain out of compliance.11Maryland Department of Transportation Motor Vehicle Administration. VEIP Frequently Asked Questions The fees are the smaller problem.
Without a passing certificate, waiver, or extension by your deadline, the MVA issues a notice of registration suspension giving you at least 15 days to fix things. Ignore that notice and your registration is suspended. Once suspended, you can’t renew, and the MVA can order confiscation of your license plates.12U.S. Environmental Protection Agency. Maryland SIP Vehicle Emissions Inspection Program COMAR 11.14.08
Driving on a suspended registration is its own offense, with a ticket and on-the-spot plate seizure both on the table. A VEIP hold also blocks any registration renewal, whether you try online, by phone, by mail, or in person. The flag sits on your record until the agency that placed it clears you.13Maryland Department of Transportation Motor Vehicle Administration. Registration – Renewal of Registration
For diesel vehicles, which have their own repair-order framework, Maryland law provides for fines up to $1,000 for failing to comply within 30 days of an emissions repair order.14Maryland General Assembly. Maryland Code Transportation 23-404
Buying or Selling a Used Vehicle
Maryland doesn’t require a seller to hand over a current emissions certificate in a private sale. But three months after you register a used vehicle in your name, the MVA sends a VEIP test notice. If the previous owner had a valid certificate and gives you a copy, you can submit it to VEIP to update your record, which may satisfy the requirement without a fresh test.1Maryland Department of Transportation Motor Vehicle Administration. VEIP – General Requirements
If you’re considering a used car and want to know it’ll pass, you can take it in for a voluntary test. The result won’t be logged against your record because the car isn’t registered to you yet, but you’ll know whether you’re about to buy an emissions headache.
Registered in Maryland but Living Elsewhere
If your vehicle stays registered in Maryland while you’re out of state, Maryland accepts test results from more than 30 jurisdictions, including most surrounding states, the District of Columbia, and Ontario, Canada.15Maryland Department of Transportation Motor Vehicle Administration. States with Vehicle Emissions Inspection Reciprocity
Where you can’t get tested, request a VEIP extension through the MVA’s online portal. You’ll need your vehicle title number and current tag number.3Maryland Motor Vehicle Administration. Maryland Vehicle Emissions Inspection Program