As of October 1, 2007, all automobiles and light-duty trucks with model years 20-years-old and newer must pass an OBD test during its inspection period. In the years since then, stations and motorists have become accustomed to the OBD testing procedure.

We appreciate all of the efforts made by inspection stations and mechanics as well as the input we have received to improve many aspects of the program.

Information on the inspection program is periodically added to this website and in email messages that are sent directly to the NHOST units. Most often this information will be available for printing. Additionally, it may be helpful for stations to guide motorists to the following NHOST website to provide them with information specific to vehicle owners:

2019 NH Inspection Program New Features

Click the button below to view a video which introduces exciting new features of the NH Inspection program that are coming this Fall.


Program Statistics

  • Over 1,800 stations participating.
  • Nearly 10,000 New Hampshire mechanics have completed training and passed the computer based certification.
  • Over 18 million inspections on the database.
  • More than 16 million OBD inspections performed.

The New Hampshire Department of Safety - Division of Motor Vehicles (NH DMV) and NHOST Services, Inc. Gordon-Darby (NHOST) are working closely together to ensure that the program continues to operate smoothly.

Used Sticker Books

To learn about the process of returning used sticker books, including how to do so using the NHOST unit, click the following link: How to return sticker books to DMV.