--- title: "What could result in a crash if the level is… | Theory Test" description: "What could result in a crash if the level is too low? The correct answer is “Brake-fluid level”. Read the instructor's explanation of the rule behind this saf" lang: en json-ld: | [ { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://fasttrackdrivinglessons.co.uk/#organization", "name": "Fast Track Driving Lessons", "url": "https://fasttrackdrivinglessons.co.uk/", "email": "info@fasttrackdrivinglessons.co.uk", "areaServed": "GB", "description": "Intensive driving courses and driving lessons across the UK with DVSA-approved instructors." }, { "@type": "WebSite", "@id": "https://fasttrackdrivinglessons.co.uk/#website", "url": "https://fasttrackdrivinglessons.co.uk/", "name": "Fast Track Driving Lessons", "publisher": { "@id": "https://fasttrackdrivinglessons.co.uk/#organization" }, "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://fasttrackdrivinglessons.co.uk/search?q={search_term_string}" }, "query-input": "required name=search_term_string" } } ] }, { "@context": "https://schema.org", "@type": "QAPage", "mainEntity": { "@type": "Question", "name": "What could result in a crash if the level is too low?", "text": "What could result in a crash if the level is too low?", "answerCount": 1, "acceptedAnswer": { "@type": "Answer", "text": "Brake-fluid level. If your brake-fluid level is too low, air can enter the braking system. This can lead to total brake failure or severely reduced stopping power, preventing you from stopping safely and potentially causing a crash. Low levels of radiator coolant, anti-freeze, or battery water can damage your engine or cause a breakdown, but they will not directly affect your ability to stop the vehicle. Regularly check all fluid levels as advised by DVSA safety guidance." }, "suggestedAnswer": [ { "@type": "Answer", "text": "Battery-water level" }, { "@type": "Answer", "text": "Radiator-coolant level" }, { "@type": "Answer", "text": "Anti-freeze level" } ] } } ] --- Get an exclusive 15% off - Offer ends next week! 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DVSA-style practice question · Safety and your Vehicle ## The answer options - Battery-water level - Radiator-coolant level - Anti-freeze level - Brake-fluid level**Correct** ## Why that is the answer If your brake-fluid level is too low, air can enter the braking system. This can lead to total brake failure or severely reduced stopping power, preventing you from stopping safely and potentially causing a crash. Low levels of radiator coolant, anti-freeze, or battery water can damage your engine or cause a breakdown, but they will not directly affect your ability to stop the vehicle. Regularly check all fluid levels as advised by DVSA safety guidance. ## 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. 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