Reference Source

New Hampshire

What is the how often for New Hampshire?

For New Hampshire, how often is all passenger vehicles shall be inspected annually during the owner’s month of birth; program / authority is automated safety and emissions inspection program, verified against its source on 2026-08-19.

Saf-C 3210.05 Time for Inspection. (a) Unless specifically stated otherwise in these rules, all passenger vehicles shall be inspected annually during the owner’s month of birth or the month set forth in Saf-C 3203.02, for a corporation.

— gencourt.state.nh.us, retrieved 2026-08-19

State
New Hampshire our reading
How often
all passenger vehicles shall be inspected annually during the owner’s month of birth verified
Program / authority
automated safety and emissions inspection program
Vehicles covered / exempt
the OBD inspection pursuant to this part shall apply to the following vehicles: (1) Model year 1996 and newer light-duty gasoline vehicles and light-duty gasoline trucks; and (2) Model year 1997 and newer light-duty diesel vehicles and light-duty diesel trucks also on this page
Sourcegencourt.state.nh.us
Verified
Review by
DatasetVehicle emissions testing: which counties require it, in which states

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

The same source also states

Saf-C 3222.01 Applicability. (a) Notwithstanding Saf-C 3203.01(a)(10), the OBD inspection pursuant to this part shall apply to the following vehicles: (1) Model year 1996 and newer light-duty gasoline vehicles and light-duty gasoline trucks; and (2) Model year 1997 and newer light-duty diesel vehicles and light-duty diesel trucks.

— gencourt.state.nh.us, retrieved 2026-08-19

The same source also states

(c) Notwithstanding Saf-C 3203.01(a)(10) or any other rule to the contrary, the OBD inspection pursuant to this part shall not apply to the following vehicles: (1) Street rods, if equipped with an engine manufactured prior to the year 1996; (2) Replicas, if equipped with an engine manufactured prior to the year 1996; (3) Motorcycles; or (4) Vehicles 20 or more model years old.

— gencourt.state.nh.us, retrieved 2026-08-19

Source

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