Somersworth Auto Repair

New Hampshire State Inspections

All New Hampshire registered vehicle require a safety inspection to be conducted.  Initial inspections must be performed within ten days of registration, and must be re-inspected every year, no later than ten days after the end of the owner’s birthday month.  If a vehicle changes owner, it must be inspected within ten days of the registration date in the new owner’s name (even if the existing inspection sticker has not expired).  The state inspection consists of both safety inspection and emissions inspection.  The safety portion of inspection consists of these general items:

  • Registration, plates, registration certificate and VIN number.
  • Steering, front end and suspension.
  • Brakes (including parking brake).
  • Odometer and speedometer.
  • Electrical system, horn and defroster.
  • Lights and reflectors (including headlight aim).
  • Glass, glazing and mirrors.
  • Wipers.
  • Exhaust system.
  • On-board diagnostic system.
  • Body, chassis and bumper height.
  • Fuel system.
  • Tires and wheels.

The emissions portion of the inspection pertains to vehicles that are less than 20 years old and includes an on-board diagnostics (OBD) test.  The OBD is a computer system in vehicles which monitors the performance of the vehicles major components, including emission control components.  The purpose of the emissions inspection is to determine if a vehicle is producing excess pollution into the environment.  The State of New Hampshire takes the vehicle inspection process very seriously to ensure all vehicles traveling in the state are meeting safety requirements to keep all motorists safe.

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