CNG Fuel System Inspector Certification Online Exam

Exam Fee: $295

NGVi’s CNG Fuel System Inspector Certification provides an independent assessment of the knowledge and application of skills necessary for technicians to competently conduct a CNG fuel system inspection according to all applicable codes and standards,
and industry best practices.

The exam consists of 60 multiple choice questions, and the time limit is three hours. Within two weeks of completing the exam, participants will be notified via email of their results. To obtain certification, NGVi requires a minimum score of 80%. Certification is valid for a period of five years. 

The exam fee includes one free retake, if necessary.

The online exam is electronically proctored by an automated exam proctoring solution. Exam participants must complete an authentication process prior to the exam. Throughout the exam, the proctoring software will monitor for behaviors typically associated with cheating. Exam participants will be recorded throughout the duration of the exam.

Exam Requirements

To complete the CNG Fuel System Inspector Certification Online Exam, participants must have:

  • A reliable, high-speed internet connection
  • A valid photo ID
  • A quiet room free of all other people

If you do not meet these requirements, you must register to participate in a live-proctored exam session. Click 
here to view the exam calendar and locations


Your actions and behavior will be recorded throughout the duration of the exam.  In order for your exam to be eligible for grading, you must adhere to the following policies:

  • You may not browse any websites, or have any other applications open during the exam.
  • The area and room around the computer will be scanned using a web cam prior to start of the exam, so all non-authorized materials should be put away. The entire area including your desk and walls should be clutter-free and clear. 
  • Your desk/testing area must be clear of any notes/manuals/study materials.
  • You are not permitted to leave the room during the exam and must observe complete silence for the duration of the exam
  • You may not lean out of the camera view during the exam.
  • Be sure you are in a well-lit, quiet and private room. The lighting of your room must be daylight quality, and overhead lighting is preferred.
  • Cell phones, iPods, cameras, notebooks, and other electronic devices are not permitted in the testing area.
  • No other individuals  are allowed in the area in which the exam is being taken and you are not permitted to communicate with others by any means
  • External cameras, when possible, should be placed on the lid of the laptop or where it will have a constant, uninterrupted view of the test taker. The webcam must be focused on the individual taking the exam at all times.

If any of these rules are violated, your exam will be declared invalid and you will not receive a score. Refunds will not be made for failure to follow the testing procedure.





Upcoming Training

Level 1: NGV Essentials
and Safety Practices

October 24, 2017
Orlando, FL

Level 2: CNG Fuel System
Inspector Training

October 25-26, 2017
Orlando, FL

Level 1: NGV Essentials
and Safety Practices

November 7, 2017
Riverside, CA

Level 2: CNG Fuel System
Inspector Training

November 8-9, 2017
Riverside, CA

Level 3: Heavy-Duty NGV
Maintenance and Diagnostics

December 4-5, 2017
Long Beach, CA

Level 2: CNG Fuel System
Inspector Training

December 6-7, 2017
Long Beach, CA


Register Now »

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About NGVi

Natural Gas Vehicle Institute is North America’s leading provider of training and consulting on natural gas as a transportation fuel.

Our services address the full range of natural gas vehicle and fueling issues, including:

Technical consulting services – Sizing and designing compressed natural gas fueling stations, vehicle assessments and technical assistance for fleets, CNG fueling station troubleshooting, natural gas vehicle maintenance facilities upgrades, liquefied natural gas fleet and fueling management.

Technical training – NGV Essentials and Safety Practices, CNG Fuel System Inspector Training, Heavy-Duty NGV Maintenance and Diagnostics Training, Light-Duty NGV Maintenance and Diagnostics Training, CNG Fueling Station Operation and Maintenance Training, CNG Fueling Station Design Training and CNG/LNG Codes and Standards Training for Fire Marshals and Code Officials.


Read more about NGVi »

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