Certificate of Inspection

Heavy vehicle Roadworthy Inspection known as a COI

Heavy Vehicle Inspections

What is a Certificate Of Inspection?

A Certificate of Inspection is the heavy vehicle version of a Safety/Roadworthy Certificate.

You are required every 12 months to have a COI completed to keep the vehicle registered.

The types of vehicles affected by the mandatory inspection are:

  • 4.5 Tonne up to and including 16 Tonne (RGVM)
  • Unregistered Heavy Vehicles (including Buses) over 16 Tonne
  • Require defect notice clearance

Consequently, your Certificate of Inspection is required every 12 months   

However, you can pay your registration renewal only when a valid Certificate of Inspection is lodged. 

Certificate of Inspection

How often do I need to have a Certificate of Inspection?

Your heavy vehicle will required to have a valid Certificate of Inspection every 12 months. 

Queensland Transport will send you a reminder notice approx. 12 weeks prior.

You can also check online for the COI Due date. 

It can be confusing on when is the best time to do your inspection.

We have a guideline listed below for each possible scenario.

For example:

Situation 1: If the heavy vehicle is inspected up to 1 month before the current Certificate Expires.

Conclusion: The new Certificate will not be allocated to the vehicle until the previous Certificate of Inspection expires.

Situation 2: The heavy vehicle is inspected more than a month before the current Certificate of Inspection expires.

Conclusion: The new Certificate of Inspection date will become the new valid certificate date.

Situation 3: If you are unable to complete the inspection in the time required and it expires.

Conclusion: You will need to contact the Department of Transport and Main Roads to apply for an extension of time. 

Get your Certificate of Inspection today. We can come to you

How do I register my unregistered Heavy Vehicle?

Your unregistered heavy vehicle will need to have an Certificate of Inspection to be registered in Queensland.

But this may not be the only requirement for the vehicle to be registered.

A HVRAS (Heavy Vehicle Regulation Assessment Scheme) is required for the following circumstances:

  • A heavy vehicle that has been unregistered for more than 3 months
  • The heavy vehicle is currently registered in another state or territory


All unregistered vehicles can be inspected by an Approved Inspection Station. This includes GVM rating over 16t.

What happens if it doesn’t pass on the first inspection?

Queensland Transport allows you 14 days from the first inspection date to have any defects repaired.

When the repairs are completed to the standard of the National Heavy Vehicle Inspection Manual  Call Us on 1300 617 233.

We will come and complete the second inspection.

(Re-Inspection charges apply to mobile services)

For more information please refer to the following resources:

Book Your COI Inspection

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