Common Roadworthy Fails in QLD (and How to Avoid Them)

The most common reasons a car fails a Queensland safety certificate are worn tyres, faulty lights, worn brakes, cracked windscreens, and worn suspension or steering components. Most are cheap to fix if you catch them first, so here's what inspectors pick up and how to be ready.

Tyres

Tyres are one of the most common fails. They need enough tread (the minimum was raised to 1.5 mm under Queensland's 2026 update), and they can't have damage like cracks, bulges or exposed cord. Check all four, and the spare where it applies. Uneven wear can also point to a suspension or alignment issue.

Lights

Blown globes, cracked lenses, and lights that don't work are easy fails and easy fixes. Walk around the car and check headlights, brake lights, indicators, reversing lights and number-plate lights. Queensland's 2026 update also tightened some lighting brightness requirements.

Brakes

Worn pads, scored rotors, or brakes that don't perform evenly will fail. If your brakes squeal, grind or feel down, get them sorted before the inspection. See our brake repair page.

Windscreen and wipers

A cracked windscreen, especially in the driver's line of sight, is a common fail. So are worn wiper blades that don't clear the glass. Both are inexpensive to address.

Suspension and steering

Worn shocks, ball joints, bushes or steering components will fail, and they often show up as clunks, a bouncy ride, or uneven tyre wear. These are safety-critical, so inspectors look closely.

Other common ones

  • Oil or fluid leaks
  • Worn or damaged seatbelts
  • Rust in structural areas
  • Exhaust leaks or excessive smoke

How to avoid a fail

The simplest way to pass first time is to have a mechanic check the car before the inspection, or choose an inspector who can fix minor fails on the spot. Because we're a mobile mechanic and inspection service, we can often sort small items and complete the certificate in one visit, rather than sending you off to fix things and come back.

Good to know

Frequently asked questions

What's the most common roadworthy fail?

Tyres and lights are among the most common, along with worn brakes. Most are cheap to fix.

What's the minimum tyre tread in QLD?

1.5 mm under the 2026 update. Tyres also can't have damage like cracks or exposed cord.

Can minor fails be fixed on the spot?

Often, yes, if your inspector is also a mechanic. We can fix many small items and complete the certificate in one visit.

Will worn brakes fail a safety certificate?

Yes, if they're worn or perform unevenly. Get them checked before the inspection.

Ready when you are

Book the mobile mechanic that comes to you across Greater Brisbane. Fixed prices, no drop-off, no waiting room.