The answer options
- The car's indicators would flash more frequently.
- The headlights on the vehicle would aim upwards
- The stopping distance of the car would increase.Correct
- The gear shift mechanism of the car would stiffen.
Why that is the answer
Underinflated tyres reduce your grip on the road surface because the tread cannot function effectively. This compromises your braking power, meaning your stopping distance will increase, particularly in wet conditions. The Highway Code emphasizes checking tyre pressures regularly, as correct inflation is essential for safe handling and braking. Tyre pressure only affects your vehicle's contact with the road, so it has no effect on electrical systems, headlight height, or gear shifting.
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?