One Stop Diesel Shop
879 Factory Road - Te Awamutu, Waipa

Thorough Certificate of Fitness and Warrant of Fitness checks for vehicle safety


Warrants of Fitness (WoFs) for cars and Certificates of Fitness (CoFs) for heavy vehicles are legal requirements to ensure that vehicles are road-worthy and safe. Driving without a WoF or CoF is illegal unless you are driving to the garage to have an inspection or associated repairs carried out.

Harty Mechanical offers prompt WoFs and CoFs for vehicle owners across Te Awamutu from an NZTA-approved inspector. And to make things even easier for you, we can remind you when your vehicle is due for it's next inspection.


CoF Repairs 


If you know that work needs to be carried out beforehand, talk to us about booking it in for CoF repairs with our experienced team of truck mechanics first. If an issue is discovered during the inspection, we can arrange repairs for you.

Contact us to arrange your CoF or WoF. We welcome customers from across the Waipa district and the wider Waikato region to our garage in Te Awamutu. And don't forget if you need us to, our mobile mechanics can deal with your vehicles on site.

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Fill out this form and we will be in touch to discuss your requirements.

Bring your truck or car to our Te Awamutu garage for its CoF or WoF

  • Certificates of Fitness (CoFs) for heavy vehicles and car Warrants of Fitness (WoF)
  • NZTA-approved inspector
  • Ensure your vehicle is road-worthy
Conveniently located in Te Awamutu, servicing Waipa and greater Waikato

Ensure your heavy vehicle is roadworthy with a Certificate of Fitness (CoF) check

Vehicles that weigh more than 3,500kgs such as trucks, large trailers and motorhomes require a Certificate of Fitness (CoF) rather than a standard WoF. Commercial passenger vehicles including taxis, shuttles and rental cars also require this certification. Certificates are valid for between three months and one year.

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Warrants of Fitness (WoFs) ensure your car is safe on the road

All cars in New Zealand require a regular Warrant of Fitness (WoF) inspection to be road-legal. The age of the vehicle determines when and how often you need to get a WoF.

  • Cars first registered before 2000, require a WoF every six months
  • Cars first registered in 2000 or later require a WoF annually
  • Cars first registered between two and three years ago require a WoF annually
  • Cars first registered less than two years ago are issued a WoF until the third anniversary of when it was first registered
  • New cars are issued a WoF for three years from the date of first registration

A WoF inspection is designed to check the safety and condition of the vehicle and includes:

  • Structural condition including looking for rust or damage
  • Checking the windscreen for damage and clarity
  • Windscreen wipers and washers
  • Lights
  • Brakes
  • Tyre condition
  • Exhaust and fuel system
  • Seatbelts
  • Doors
  • Speedometer
  • Airbags, antilock braking systems and electronic stability control systems
One Stop Diesel Shop
879 Factory Road, Te Awamutu, Waipa