WOF

In New Zealand, a Warrant of Fitness (WOF; colloquially a warrant) is a document certifying that a light motor vehicle has passed a compulsory periodic inspection of safety and roadworthiness. Most vehicles with a gross mass of under 3,500 kilograms (7,700 lb) which are used on public roads are required to undergo a WOF test annually until six years old, after which the vehicle must be tested six-monthly.
Vehicles over 3,500 kilograms (7,700 lb), passenger service vehicles (taxis, buses, shuttles, etc.), and rental vehicles do not have a Warrant of Fitness. Instead, these vehicles must possess a Certificate of Fitness (COF). The COF test is similar to the WOF test, but must be undergone every six months regardless of the age of the vehicle.
A WOF test checks tyre condition, brake condition, structural condition, lights, glazing, windscreen wipers and washers, doors, seat belts, airbags (if fitted), speedometer, steering and suspension, exhaust, and fuel system. A vehicle must meet certain criteria in each category to pass the Warrant of Fitness. Many local car repair garages throughout New Zealand are authorised to perform testing and to issue Warrants of Fitness.
Each vehicle used on public roads must display a Warrant of Fitness sticker in the top right corner of its windscreen (as viewed from inside the vehicle). The sticker indicates that the vehicle passed its last WOF inspection, and shows when the next inspection is due. The sticker displays on the outside the year the WOF is due, with a hole punched through a number on the side or bottom indicating the month due (e.g. a hole through the number 4 indicates the next test is due in April). On the inside, the sticker shows the full date of when the next inspection is due, the vehicle registration number, and the issuing agent stamp.
A vehicle, even with a current WOF, can still be inspected by a police officer and ordered unroadworthy. If a vehicle lacks a WOF sticker, or its WOF is expired, the driver is liable for a NZ$200 fine.If a vehicle is found parked on a public road without a valid WOF sticker, the fine may instead be sent to the vehicle's registered owner.

A Warrant of Fitness inspection includes the following safety checks:•Tyre condition (including tread depth)
•Brake operation
•Structural condition (rust isn't allowed in certain key areas)
•Lights (are all bulbs working?)
•Glazing (is your windscreen safe?)
•Windscreen washers and wipers (do they work?)
•Doors (do they open and close safely?)
•Safety belts (must not be faded or damaged; buckles must work properly)
•Airbags (if fitted - SRS light should work correctly)
•Speedometer (must be working)
•Steering and suspension (must be safe and secure)
•Exhaust (there must be no leaks and the exhaust must not be too loud or too smoky)
•Fuel system (there must be no leaks).
After your vehicle passes its Warrant of Fitness check, it becomes your responsibility to keep it in the condition that it was in when it passed the inspection.