The answer options
- By driving at higher speeds where possible
- By having your vehicle serviced regularlyCorrect
- By driving at higher speeds where possible
- By keeping an empty roof rack on your vehicle
Why that is the answer
Regular vehicle servicing ensures your engine runs as efficiently as possible, saving fuel and reducing harmful emissions as recommended in official DVSA guidance. Well-maintained components, correct oil levels, and clean filters keep fuel consumption to a minimum. Conversely, driving at higher speeds increases fuel use dramatically due to higher engine revs and air resistance, while an empty roof rack creates unnecessary drag, making the engine work harder.
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 deter thieves from stealing your vehicle?