Vehicles registered in the Cumberland County are subject to annual emissions testing that is performed at the same time as the state's safety inspection. The emissions inspection includes an equipment check, a gas cap pressure test for 1974 and newer vehicles and an Onboard Diagnostics (OBD) inspection for 1996 and newer vehicles.
Diesel Vehicles:
Only diesel vehicles with a GVWR of more than 18,000 lbs are tested for emissions.
Exemptions:
1. Vehicles with antique registration and plates
For more information visit: https://www.maine.gov/dep/
29-A Maine Revised Statutes
§ 1912. Mufflers
1. Muffler required. A person may not operate a motor vehicle unless that vehicle is equipped with an adequate muffler properly maintained to prevent excessive or unusual noise. For purposes of this subsection, "excessive or unusual noise" includes motor noise emitted by a motor vehicle that is noticeably louder than similar vehicles in the environment.
2. Cutouts prohibited. A muffler or exhaust system may not be equipped with a cutout, bypass or similar device.
3. Amplification prohibited. A person may not operate a motor vehicle with an exhaust system that has been modified when the result of that modification is the amplification or increase of noise emitted by the motor above that emitted by the muffler originally installed on the vehicle.
4. Exhaust system fastened to engine. The entire exhaust system must be complete, without leakage and securely fastened to the engine block and frame.
6. Defense for noise violations by motor vehicles. The following are defenses to a violation of subsection 1 or 3.
(a) If a muffler or exhaust system of a motor vehicle as defined in section 101, subsection 42, not including a motorcycle, does not emit noise in excess of 95 decibels as measured in accordance with standards and specifications outlined in standard J-1169 adopted by the Society of Automotive Engineers in May 1998, subsections 1 and 3 do not apply. A person served with a Violation Summons and Complaint charging a violation of subsection 1 or 3 must provide satisfactory evidence that the muffler or exhaust system does not emit noise in excess of 95 decibels as measured in accordance with standards and specifications outlined in standard J-1169 adopted by the Society of Automotive Engineers in May 1998. Measurements must be made by a participating certified inspection station.
Antique
Available for vehicles manufactured after 1915 and more than 25 years old; equipped with an engine manufactured either at the same time as the vehicle or to the specifications of the original engine; substantially maintained in original or restored condition, and used primarily for exhibitions, club activities, parades or events of public interest. An antique auto may not be used as the owner’s primary mode of transportation of passengers or goods and may not be a reconstructed vehicle or altered vehicle.
Custom
Available for vehicles manufactured after 1948 that are at least 25 years old, or manufactured to resemble such a vehicle, that have been altered or modified from the manufacturer's original design or have a body constructed from non-original materials.
Horseless Carriage
Available for vehicles manufactured before 1916 that are equipped with an engine manufactured either at the same time as the vehicle or to the specifications of the original engine, and which are used primarily for exhibitions, club activities, parades and other events of public interest and not used as a primary mode of transportation.
Street Rod
Available for a replica of or a modified antique auto manufactured prior to 1949.
YOM
Vehicles registered as "Antique" may display YOM plates. The antique plates and registration must be carried within the vehicle at all times.