P&B Group Auto Electrical, Mechanical, Auto AirP&B Group Auto Electrical, Mechanical, Auto AirP&B Group Auto Electrical, Mechanical, Auto Air
Heavy and Light Mechanical, Auto Electrical, Auto Air Conditioning, Refrigeration, and Automation Specialists
Two workshops in Frankton, Hamilton. Servicing Waikato and central North Island

COF inspections for trucks, trailers, heavy vehicles and commercial fleets

P & B Group carries out COF inspections for a wide range of heavy vehicles from our dedicated workshop in Frankton, Hamilton. With in-house COF inspectors and an experienced heavy mechanical team on-site, we provide COF inspections for trucks, heavy trailers, motorhomes, passenger service vehicles, rental vehicles and commercial heavy vehicles.
Whether you operate a single truck or manage a larger fleet, we understand how important it is to keep vehicles compliant, safe and ready for the road. Our team takes a practical, straightforward approach and works hard to make the inspection and repair process as smooth as possible.
Please get in touch with us to book a COF inspection or discuss your heavy vehicle compliance requirements.

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COF (Certificate of Fitness) inspections to ensure heavy vehicles are roadworthy

  • COF inspections for trucks, trailers, motorhomes and commercial vehicles
  • In-house COF inspectors and heavy mechanical repair support
  • Pre-COF inspections, VCA inspections and compliance-related repairs available
Workshop location: 289 Kahikatea Drive, Frankton, Hamilton

Assessing heavy vehicles for safety and compliance

COF inspections are an important part of keeping heavy vehicles legally able to operate on New Zealand roads. COFs are required for a wide range of commercial and heavy vehicles and the inspections help identify anything that could affect safety, reliability or compliance. If repairs, diagnostics or further investigation are needed, our heavy mechanical team can work through the issues and help organise the right next steps.
Different operators have different scheduling needs, so we try to be as flexible as possible around inspection and repair timeframes. Some customers need vehicles turned around quickly to keep work moving, while others are able to leave vehicles with us while repairs or compliance work are completed. Our focus is always on practical advice, efficient service and helping customers.

Pre-COF checks to help avoid failed inspections

Pre-COF checks are a useful way to identify potential issues before an official COF inspection takes place. For many operators, this can help reduce the risk of failed inspections, unnecessary downtime and disruption to work schedules. The team can check over heavy vehicles, trailers and equipment beforehand, identify any obvious concerns and recommend repairs or maintenance that may be needed before the official inspection process begins. Common issues can include brakes, steering, suspension, tyres, structural concerns and load-related components that may affect compliance or roadworthiness.

VCA inspections and certification-related support

P & B Group also provides VCA inspections and support for customers needing additional vehicle compliance assessments. Whether you operate commercial trucks, heavy trailers, passenger service vehicles or rental vehicles, the team can help you understand what is required and point you in the right direction if further compliance work is needed.
While LT400 certification work is now handled through external networks, we can still assist with organising the right support where required, including working alongside trusted engineers, certified welders and specialist providers.

A team that understands the pressures of keeping vehicles on the road

P & B Group is known for being approachable, helpful and easy to deal with, with a team that genuinely works hard to keep customers informed and vehicles moving. From urgent repairs and COF-related work through to sourcing parts, organising repairs and helping manage timeframes, the focus is always on practical support, good communication and quality workmanship. Much of our work comes from repeat customers and word of mouth, reflecting the strong relationships we build with transport operators, businesses and vehicle owners throughout the region.
To arrange a COF inspection, pre-COF inspection, VCA inspection or heavy vehicle compliance-related repairs, contact P & B Group today. Based in Hamilton, we work with customers across Waikato, Bay of Plenty, Auckland and the wider central North Island.

Frequently Asked Questions for COF Inspections

A COF inspection checks that a heavy or commercial vehicle meets New Zealand safety and compliance standards. Depending on the vehicle type, this can include brakes, steering, suspension, tyres, lights, structural condition, glazing, load-related components and other key safety systems.

A COF inspection is a regular in-service safety and compliance inspection for heavy and commercial vehicles operating on New Zealand roads. A VCA inspection is generally a broader vehicle compliance assessment process that may be required for certain certification, repair or compliance situations.

Most heavy vehicles in New Zealand require a COF inspection every six months, although some privately owned heavy motorhomes may qualify for a 12-month inspection interval.

If a vehicle fails its COF inspection, repairs or further compliance work may be required before it can legally return to service. Depending on the issue, this could involve mechanical repairs, structural repairs or certification-related processes. Because P & B Group has a heavy mechanical workshop on-site, repairs and compliance-related work can often be organised alongside the inspection process,
P & B Auto Electrical
20 Woodward Street, Frankton, Waikato 3204, New Zealand
Business Hours
Monday - Friday: 7:30AM - 5:30PM
Saturday: 8:00AM - 12:00PM | Sunday: Closed
P & B Mechanical
289 Kahikatea Drive, Frankton, Hamilton 3204, New Zealand
Business Hours
Monday - Friday: 7:30AM - 5:00PM
Saturday: 7:00AM - 12:00PM | Sunday: Closed
Contact Number
Heavy and Light Mechanical, Auto Electrical, Auto Air Conditioning, Refrigeration, and Automation Specialists
Two workshops in Frankton, Hamilton. Servicing Waikato and central North Island