US Trade Exam Comparison
Compare certification exams side-by-side. Find the right exam for your trade, understand what to expect, and prepare with verified practice questions.
| Exam | EPA 608 Core HVAC | CDL General Knowledge Trucking | ASE G1 Maintenance & Light Repair Automotive |
|---|---|---|---|
| Real Exam Questions | 25 | 50 | 55 |
| Time Limit | 120 minutes | 60 minutes | 90 minutes |
| Passing Score | 70% | 80% | 65% |
| Cost | $25-75 | $50-100 | $47 (registration) + $43/test |
| Reported Pass Rate | ~55% | ~60% | ~65% |
| Difficulty | ★★★☆☆Medium | ★★★★☆Hard | ★★★★☆Hard |
| Verification Source | EPA Section 608 Certification Manual | FMCSA CDL Manual | ASE G1 Study Guide (Motor Age Training) |
| ApexExam Question Bank | 160verified questions | 155verified questions | 130verified questions |
| Languages | EN, ES, ZH | EN, ES, ZH | EN, ES, ZH |
EPA 608 Core (HVAC)
Required for all HVAC technicians handling refrigerants. Tests knowledge of Clean Air Act regulations, ozone depletion, refrigerant recovery, types, and safety.
CDL General Knowledge (Trucking)
Mandatory for all commercial driver's license applicants. Covers vehicle inspection, control, safe driving, air brakes, combination vehicles, and cargo transport.
ASE G1 Maintenance & Light Repair (Automotive)
Entry-level auto technician certification. Covers engine systems, suspension, brakes, electrical, HVAC, transmission, and drivetrain diagnostics and service.