COF-Ready Trucks: What Buyers Should Know

A Certificate of Fitness (COF) is a legal requirement for all commercial vehicles in South Africa weighing over 3,500 kg. It certifies that the vehicle meets minimum safety and roadworthiness standards.

The COF must be renewed annually at a registered testing station. Without a valid COF, a truck cannot be registered or legally operated on public roads.

The COF inspection checks the following systems on every commercial vehicle:

• Brakes: Service brake performance, handbrake efficiency, brake line condition and brake pad/drum wear.
• Lights: Headlights (high and low beam), indicators, brake lights, reverse lights, number plate light and reflectors.
• Tyres: Tread depth (minimum 1.6 mm), tyre condition, sidewall damage, matching tyres per axle and correct load rating.
• Steering and suspension: Steering play, ball joints, shock absorbers, springs and bushings.
• Body and chassis: Structural integrity, rust, corrosion, cracks and body mounting security.
• Windscreen and mirrors: Cracks, visibility, rear-view mirror condition and windscreen washer function.
• Exhaust and emissions: Exhaust system condition, smoke emissions and noise levels.
• Speedometer and odometer: Accuracy and functionality.
• Horn and wipers: Working condition and effectiveness.

A COF-ready truck means the seller has already passed the vehicle through a COF test and addressed any issues. This offers several advantages:

• Saves time: You can register and operate the truck immediately without booking your own COF test.
• Saves money: Repair costs for COF failures (bad tyres, brakes, lights) are already covered by the seller.
• Confirms roadworthiness: An independent test station has verified the truck meets legal safety standards.
• Reduces risk: COF-ready trucks have fewer hidden problems compared to trucks sold “as-is” without a certificate.
• Better for finance: Some finance providers require a valid COF before approving used truck loans.

• Cost: COF testing fees vary by testing station and region, typically ranging from R300–R600 per test.
• Validity: A COF is valid for 12 months from the date of issue and must be renewed annually.
• Renewal: You can renew the COF up to 30 days before the expiry date without losing the remaining validity.
• Fines: Operating a truck without a valid COF can result in traffic fines, impoundment and insurance claims being rejected.

If a truck is sold without a valid COF, you need to factor in the cost and time of getting one yourself. Before buying:

• Ask why the truck does not have a valid COF — was it recently expired, or were repairs needed?
• Get a pre-purchase inspection from a reputable mechanic or testing station.
• Check the tyres, brakes and lights yourself as a starting point — these are the most common COF failures.
• Price up the estimated repair costs and negotiate the purchase price accordingly.
• Factor in the testing fee and potential downtime while COF work is completed.

See our what to check before buying guide for a full inspection checklist.