Massachusetts requires every passenger vehicle to pass a combined safety and emissions inspection every year. Cost is a flat $35. The state uses the OBD-II scan for 1996+ vehicles and a tailpipe test for older ones.
Rules change. Verify the current Massachusetts requirements with the state DMV or environmental agency before you go. This guide reflects the program as of 2026.
| Item | What the Inspector Checks |
|---|---|
| Brakes | Pads, rotors, drums, lines, parking brake. Minimum 1/16 lining. |
| Steering and suspension | Ball joints, tie rods, control arms, struts. |
| Tires | Tread minimum 2/32 inch, no sidewall damage. |
| Lights | All required lights present and working. |
| Horn, wipers, mirrors | All must function. |
| Windshield | No cracks or damage in critical viewing area. |
| Exhaust system | No leaks, all OEM emissions equipment present. |
| OBD-II emissions (1996+) | MIL status, readiness monitors, stored codes. |
| Tailpipe (pre-1996) | ASM dyno test for HC, CO, NOx on 1995 and older vehicles. |
Worn brake components is one of the top reasons cars fail in this state.
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Get a Full Diagnosis →Windshield crack is one of the top reasons cars fail in this state.
Get a Full Diagnosis →Exhaust leak or rust is one of the top reasons cars fail in this state.
Get a Full Diagnosis →Worn suspension component is one of the top reasons cars fail in this state.
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Flat $35 statewide for the combined safety and emissions inspection. The same $35 covers a free reinspection within 60 days if you fail.
Every 12 months. The sticker on your windshield shows the expiration month.
You have 60 days to repair and return for a free reinspection at the same station. After 60 days you pay the full $35 again.
Yes. If you have spent at least $929 (adjusted annually) on emissions-related repairs and still cannot pass, you may qualify for a one-year waiver.
Vehicles 25+ model years old are exempt from the emissions portion but still must pass the safety inspection.
No. The fine is $50 plus court costs, and police actively enforce. Trooper sweeps frequently target expired stickers.