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S1 practice questions - frequently asked questions

Plain answers about how S1 Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real S1 exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The S1 exam spans 4 domains: Safety and Emergency Equipment Systems Diagnosis and Repair (20% of the exam); Body and Interior Maintenance (28% of the exam); Installed Special Equipment Diagnosis and Repair (20% of the exam); Heating Systems Diagnosis and Repair (32% of the exam). Every practice question on this site is tagged to one of these domains.

The domains are not weighted equally on the exam. By share of the marks: Heating Systems Diagnosis and Repair 32%; Body and Interior Maintenance 28%; Safety and Emergency Equipment Systems Diagnosis and Repair 20%; Installed Special Equipment Diagnosis and Repair 20%.

The S1 exam has 60 questions and is completed in 1 hour 15 minutes. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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