The Vehicle Emission Control Information label, or VECI label, is the permanent sticker every new motor vehicle sold in the United States must carry in its engine compartment as the legal record of its emissions certification. Federal VECI label requirements are set out in 40 CFR 86.1807-01, and they cover what the label says, how it’s printed, where it goes, and how firmly it must be attached.1eCFR. 40 CFR 86.1807-01 – Vehicle Labeling Technicians read it during service, inspectors check it at smog stations, and removing or defacing it is a Clean Air Act violation.
What Must Appear on the Label
All text on the label must be in English, printed in block letters and numerals in a color that contrasts with the label background.1eCFR. 40 CFR 86.1807-01 – Vehicle Labeling The regulation sets a minimum content list:
- The heading “Vehicle Emission Control Information.”
- The full corporate name and trademark of the manufacturer responsible for the emissions certification.
- Engine displacement, in liters or cubic inches.
- Test group and evaporative/refueling family identification codes, which tie the vehicle to its certified emissions profile.
- An unconditional statement that the vehicle conforms to the applicable EPA regulations for its model year and vehicle class.
- The exhaust emission standards (or family emission limit, where applicable) the test group was certified to meet, including any different in-use standards that apply over the vehicle’s lifetime.
The compliance statement follows a prescribed format that varies by vehicle class. A light-duty vehicle’s label reads “This Vehicle Conforms to U.S. EPA Regulations Applicable to [Fuel]-Fueled [Model Year] New Motor Vehicles,” while light-duty trucks, medium-duty passenger vehicles, and chassis-certified heavy-duty vehicles each carry slightly different wording.1eCFR. 40 CFR 86.1807-01 – Vehicle Labeling Manufacturers may add a note about state emission standards, such as California Air Resources Board compliance, but that notation is optional rather than federally required.
Vehicles designed to run on fuels other than gasoline or diesel, including hybrids that use more than one fuel type, need an added statement identifying the fuel or fuels on which the vehicle is certified to operate, and the compliance statement itself must name the fuel type.1eCFR. 40 CFR 86.1807-01 – Vehicle Labeling Fully electric vehicles still get a VECI label, with content reflecting their zero-emission classification rather than exhaust standards.
Font, Legibility, and Placement Rules
Compliance information and conformity statements must be printed at a minimum text height of three thirty-seconds of an inch, roughly 2.4 millimeters.1eCFR. 40 CFR 86.1807-01 – Vehicle Labeling Small, but readable under typical engine-bay lighting. The color-contrast rule applies to everything on the label, and the whole label must stay legible for the life of the vehicle.
Placement rules are just as strict. The label must sit somewhere in the engine compartment where a technician or inspector can read it without removing parts or using tools.1eCFR. 40 CFR 86.1807-01 – Vehicle Labeling In practice, that usually means the underside of the hood or a radiator support panel.
Two physical requirements reinforce permanence. The label must be affixed so that any attempt to remove it destroys or defaces the label itself, and it cannot be placed on any component that is easily detachable from the vehicle.1eCFR. 40 CFR 86.1807-01 – Vehicle Labeling The material itself has to survive years of heat, oil, coolant, and general engine-bay chemistry.
Penalties for Removing or Altering the Label
The Clean Air Act treats the VECI label as an emission control element, and removing or disabling any emission control device or design element installed under federal regulations is a federal violation. Before the first sale to a consumer, the prohibition is absolute for any person. After the vehicle has been sold, the law prohibits anyone from knowingly removing or disabling emission controls.2Office of the Law Revision Counsel. 42 USC 7522 – Prohibited Acts
Penalty amounts depend on who commits the violation. A manufacturer or dealer that tampers with a vehicle’s emission controls faces a statutory civil penalty of up to $25,000 per vehicle. Any other person who tampers faces up to $2,500 per vehicle. Manufacturing, selling, or installing defeat devices carries a separate per-part penalty.3GovInfo. 42 USC 7524 – Penalties These base amounts are adjusted upward periodically for inflation, so the actual penalty in a given year runs higher than the original statutory figure. An EPA enforcement alert from 2020 cited an adjusted maximum of $4,819 per device or per vehicle for tampering, with dealers and manufacturers facing significantly more.4United States Environmental Protection Agency. Enforcement Alert – Aftermarket Defeat Devices and Tampering Are Illegal Each vehicle counts as a separate offense, so exposure adds up quickly across a fleet or a repair shop’s customer base.
Heavy-Duty and Imported Vehicles
Heavy-duty vehicles are labeled under a separate regulation, 40 CFR 1037.135, though the structure mirrors the light-duty rules. The label still needs the “Vehicle Emission Control Information” heading, the manufacturer’s name and trademark, an EPA vehicle family designation, and a compliance statement that reads “This Vehicle Complies With U.S. EPA Regulations for [Model Year] Heavy-Duty Vehicles.” Heavy-duty labels also have to include the date of manufacture, at least month and year. A manufacturer can stamp that date elsewhere on the vehicle instead, but only if it tells EPA where during the certification application. For incomplete heavy-duty vehicles where another company designs and installs a fuel tank using an evaporative canister, the label must state the maximum fuel tank capacity tied to the certification.5eCFR. 40 CFR 1037.135 – Labeling
Any motor vehicle imported into the United States must carry a U.S. EPA emission control label in the engine compartment, in English. A vehicle that already bears the correct label and is covered by a certificate of conformity enters straightforwardly under EPA Form 3520-1. A vehicle without proper EPA certification or labeling is classified as nonconforming and must be imported through an Independent Commercial Importer, who takes responsibility for bringing the vehicle and its labeling up to federal standards. Improperly importing a vehicle outside that process can trigger a civil penalty of up to $44,539 per vehicle, forfeiture of the importation bond, and seizure by U.S. Customs.6Environmental Protection Agency. Importation of Motor Vehicles and Motor Vehicle Engines Subject to Federal Air Pollution Regulations (EPA Form 3520-1)
Replacing a Lost or Damaged Label
Labels get scraped off during body work, fade after years of heat, or vanish when hoods are replaced after a collision. If yours is missing or illegible, you’ll want a replacement before your next emissions inspection. You’ll need two pieces of information to start:
- Your Vehicle Identification Number, the 17-character code found on the driver-side dashboard near the windshield, on the driver door jamb sticker, and on your registration documents.7GovInfo. 49 CFR Part 565 – Vehicle Identification Number (VIN) Requirements
- Your engine family or test group number, often listed in the original owner’s manual or on registration paperwork. If you can’t find it, a dealership can usually look it up from the VIN.
Replacement labels are ordered through a dealership’s parts department, not directly by the vehicle owner. The dealership enters the VIN into the manufacturer’s ordering system, which verifies the data against the original certification records. Only the original manufacturer has the authority to produce a certified replacement. Most charge a fee, and the label generally arrives within one to three weeks. For vehicles with engines built by a different supplier, common with diesel trucks, you may need to contact the engine manufacturer directly rather than the vehicle brand’s dealer.
Two limits are worth knowing. Manufacturers are not legally obligated to furnish replacement labels, though most will. And they are only required to retain certification records for 10 years, so replacements for much older vehicles can be difficult or impossible to obtain. Once a vehicle has been titled and registered for the first time, it cannot be re-certified; the replacement label must match the original certification exactly.
Why a Missing Label Matters at Inspection
In states that require emissions testing, inspectors use the label to confirm that the engine configuration matches the certified emissions profile. Without it, many inspection programs will fail the vehicle or flag it as untestable, which can block registration renewal. The specific outcome depends on the state program, but the practical result is the same: you can’t prove your vehicle meets the standard it was built to.
For commercial fleets and heavy-duty vehicles, a missing label can trigger compliance issues during roadside inspections or audits. The label is the fastest way for an enforcement officer to confirm that a vehicle matches its original certification, and its absence raises the question of whether something has been tampered with. Ordering a replacement before an inspection is always cheaper than dealing with the consequences of arriving without one.