A CoF is a legal requirement for all rental vehicles in New Zealand, taking precedence over a Warrant of Fitness. 

If your vehicle is over 3500kgs, it should already have one.  If your vehicle currently has a Warrant of Fitness (WOF), you will need to get a COF prior to a renter using your vehicle.

You can get a COF from VINZ, or VTNZ.

For further information on COFs, as well as a full list of COF inspection providers, visit the NZTA