What a roadworthy actually assesses on your car

You've just sold your car, or you're buying one, or your insurer has asked for proof of roadworthiness—and suddenly you need a roadworthy certificate. But what exactly gets tested? Knowing the specifics matters, because it helps you understand whether a problem your tester flags is genuine, and it prepares you for what to expect when you hand over your keys.

A roadworthy test is a standardised safety and emissions inspection. It's not a full mechanical overhaul; it's a structured check of systems that directly affect whether your vehicle can be driven legally and safely on South African roads. The tester works through a prescribed list, looking for defects that would make your car unfit for the road or in breach of environmental standards.

Brakes, steering and suspension

Your tester will check brake pad thickness, brake fluid condition, and whether your brakes work evenly across all wheels. They'll test steering responsiveness and look for play or looseness in the steering wheel. Suspension components—shock absorbers, springs, bushings—are examined for wear, leaks, or damage that would affect stability or handling. These are safety-critical systems; a failure here usually means the car poses a real risk. Pay attention if a tester flags brake wear or a seized calliper, because these aren't judgment calls—they're measurable faults that affect your ability to stop.

Lights, wipers and visibility

Every light on your car gets tested: headlights (dip and main beam), tail lights, brake lights, indicators, hazard lights, number plate lights, and reversing lights. The tester checks that they work and that the beam pattern is correct. Windscreen wipers and washers must function. The windscreen itself is inspected for cracks or chips that impair the driver's view. Mirrors—windscreen, side and rear—must be intact and adjustable. This group of checks is straightforward: either the light comes on or it doesn't, the wiper works or it doesn't. If you fail here, the fixes are usually inexpensive.

Tyres, wheels and bodywork

Tyre tread depth is measured; the legal minimum is 1.6 millimetres across the tread. The tester looks for uneven wear, bulges, cuts, or repairs that suggest the tyre is unsafe. Wheels must be secure and not cracked or bent in a way that affects safety. The bodywork and undercarriage are checked for corrosion or damage that compromises structural integrity. Seatbelts and airbags (if fitted) must be present and functional. The fuel cap and tank must be secure. Again, these are objective measures—a tyre below the limit is below the limit, and a corroded chassis component either is or isn't a hazard.

Emissions and engine systems

Your vehicle's emissions are tested, usually via an on-board diagnostic scan and/or a tailpipe test. The tester checks that your engine management system is working, that the check-engine light isn't on, and that emissions are within legal limits. The horn must work. Battery terminals and connections must be secure. These checks confirm your car isn't leaking harmful pollutants and that key engine and safety systems are operational.

What a roadworthy test does not cover

A roadworthy is not a used-car inspection. The tester doesn't check oil levels, coolant condition, transmission fluid, or the state of your spark plugs. They won't assess engine compression, fuel efficiency, or the quality of your cabin air filter. They're not looking at whether your engine sounds healthy or whether your exhaust has rust on it—they're checking legal and safety thresholds, not maintenance standards.

When you book a test, ask the station for a copy of the inspection checklist so you know what's being assessed. If the tester fails your car, ask for the specific fault—not just