H1 logo
Focused certification exam prep
About FAQ View plans
Questions, answered

H1 practice questions - frequently asked questions

Plain answers about how H1 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 H1 exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The H1 exam spans 8 domains: General Engine Diagnosis (18% of the exam); Cylinder Head and Valve Train Diagnosis and Repair (8% of the exam); Engine Block Diagnosis, Repair, and Overhaul (8% of the exam); Lubrication and Cooling Systems Diagnosis and Repair (8% of the exam); Air Induction and Exhaust Systems Diagnosis and Repair (14% of the exam); Fuel System Inspection, Diagnosis, and Repair (28% of the exam); Starting and Charging System Diagnosis and Repair (8% of the exam); Ignition System Inspection Diagnosis, and Repair (8% 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: Fuel System Inspection, Diagnosis, and Repair 28%; General Engine Diagnosis 18%; Air Induction and Exhaust Systems Diagnosis and Repair 14%; Cylinder Head and Valve Train Diagnosis and Repair 8%; Engine Block Diagnosis, Repair, and Overhaul 8%; Lubrication and Cooling Systems Diagnosis and Repair 8%; Starting and Charging System Diagnosis and Repair 8%; Ignition System Inspection Diagnosis, and Repair 8%.

The H1 exam has 60 questions and is completed in 1 hours 15 minutes. Our timed practice mirrors that length and pacing, so exam day feels familiar.

Try 10 free questions View plans