The answer options
- A braking system that is faultyCorrect
- A faulty gearbox
- Faulty exhaust system
- Faulty electronics
Why that is the answer
A faulty braking system, such as brakes that bind or grab, can cause tyres to wear unevenly or excessively because a wheel may lock or drag while driving. Incorrect tyre pressures and misaligned steering also cause uneven wear. Other issues like a faulty gearbox, exhaust, or electronics affect engine performance, emissions, or electrical systems, but they do not directly impact tyre wear. Keep your braking system well maintained in line with Highway Code guidelines.
How this comes up in the real test
Questions from safety and your vehicle appear throughout the 50-question multiple-choice section, and the wording changes between versions. Learn the rule rather than the sentence: the DVSA can ask the same point from the opposite direction, and a memorised answer falls over the moment the phrasing moves.
The pass mark is 43 out of 50, so seven wrong answers is your entire margin. If a whole category is shaky, run the topic practice below until you are getting every question right for the right reason, then go back to full mocks under the clock.
More safety and your vehicle questions
- A vehicle MOT test will include an exhaust emissions test. What is the reason for this?
- Before leaving your vehicle unattended, what should you remove from it?
- How can drivers help the environment?
- How can driving in a fuel-efficient manner help protect the environment?
- How can the volume of traffic on roads be reduced?
- How can you avoid wasting fuel?