The Warrant of Fitness (WOF) is one of the most important parts of vehicle ownership in New Zealand. Every used car must have a current WOF to be legally driven on public roads — and when you’re buying or selling, a failed WOF can hold up the whole deal. Here’s everything you need to know, plus a full checklist to help you pass first time.

What Is a WOF?

A Warrant of Fitness is a certificate issued by an NZTA-approved inspector confirming your vehicle meets minimum safety standards. In New Zealand, vehicles first registered before 2000 require a WOF every 6 months. Vehicles registered from 2000 onwards require one annually.

The inspection covers a wide range of safety components — from brakes and tyres to lights and windscreen wipers. If any item fails, you’ll need to fix it before the WOF is issued.

Why WOF Matters When Buying or Selling

When buying a used car, always check:

  • When the current WOF expires
  • Whether the car has a history of failed WOFs (ask the seller or check service records)
  • If the WOF is close to expiry, factor repair costs into your offer

When selling, having a fresh WOF makes your listing far more attractive and gives buyers confidence in the vehicle’s condition.

Full WOF Checklist

Use this checklist to do a basic self-assessment before taking your vehicle in for inspection.

Tyres

  • Tread depth is at least 1.5mm across the full width of the tyre
  • No cuts, bulges, or exposed cords visible
  • All four tyres are the same type (mix of radial and cross-ply is a fail)
  • Spare tyre is in serviceable condition (if fitted)

Brakes

  • Brakes respond firmly without pulling to one side
  • Handbrake holds on a slope
  • No grinding or squealing noises when braking
  • Brake fluid reservoir is at the correct level

Lights

  • Headlights (low and high beam) work on both sides
  • Tail lights, brake lights, and reversing lights all working
  • Indicators front and rear functioning correctly
  • Hazard lights working
  • Number plate light functioning

Windscreen and Wipers

  • No cracks or chips in the driver’s line of vision (chips larger than 3mm are a fail)
  • Wipers clear the windscreen effectively without streaking
  • Windscreen washers functional
  • Rear wiper working (if fitted)

Steering

  • No excessive play in the steering wheel
  • Steering is responsive and straight
  • Power steering fluid at correct level (if applicable)
  • No unusual noises when turning

Suspension

  • No knocking sounds over bumps
  • Vehicle sits level (not sagging on one side)
  • Shock absorbers don’t bounce excessively after pressing down on the vehicle
  • No visible damage to suspension components

Seatbelts

  • All seatbelts latch and release correctly
  • Belts retract smoothly and lock under sudden tension
  • No fraying, cuts, or visible damage to belt webbing
  • All anchor points secure

Seats

  • Driver’s seat adjusts and locks in place
  • No seat has structural damage affecting its safety in a crash

Body and Structure

  • No sharp edges or protruding metal that could injure occupants
  • Doors open, close, and latch securely from inside and outside
  • Bonnet latch works with a safety catch
  • Boot lid secures properly

Exhaust

  • Exhaust is fully intact with no holes or leaks
  • No excessive smoke from the exhaust on startup or under load
  • Exhaust is securely mounted (no dragging or rattling)

Fuel System

  • No visible fuel leaks under the vehicle
  • Fuel cap seals correctly

Speedometer

  • Speedometer is working and readable

Common Reasons Used Cars Fail Their WOF

Based on NZTA data, the most common WOF failures in New Zealand are:

  1. Worn tyres — most frequent fail, especially on older vehicles
  2. Brake issues — worn pads, leaking fluid, or uneven braking
  3. Cracked or chipped windscreens — even small chips in the driver’s eyeline cause a fail
  4. Blown lights — easy and cheap to fix before inspection
  5. Corroded or damaged body — especially on older Japanese imports

How Much Does a WOF Cost in NZ?

WOF inspection fees vary by provider but typically range from $50 to $75. Chain providers like AA Auto Centre, Midas, and many local garages offer competitive pricing. Some dealers include a fresh WOF as part of a used car sale.

Tips to Pass First Time

  • Do a self-check using this list a week before your inspection — gives you time to fix minor issues
  • Replace blown bulbs yourself before going in — it takes minutes and saves inspection rescheduling
  • Check tyre tread with a tread depth gauge (under $10 at Supercheap Auto)
  • Clean your windscreen — inspectors sometimes miss chips on dirty glass, but it’s better not to risk it

A car with a current WOF is not just a legal requirement — it’s a signal of a well-maintained vehicle. If you’re buying, use this checklist during your inspection. If you’re selling, a fresh WOF can help you get a better price faster. Browse WOF-current listings right now on KiwiVehicles.