Free S2 Practice Questions

1 exam-style questions with answers and explanations. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.

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The S2 exam has 65 questions and runs 1 hour 30 minutes.

Question 1

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AA BB CC DD

Show answer & explanation

Correct answer: A - A

What's on the S2 exam

The School Bus Certification - S2 Diesel Engines (S2) exam is organized into 6 knowledge domains. These free practice questions are drawn from across them so you can see where you're strong and where to study:

General Engine Diagnosis 27% of exam
In-Chassis Engine Inspection and Repair 11% of exam
Lubrication and Cooling Systems Diagnosis and Repair 13% of exam
Air Induction and Exhaust Systems Diagnosis and Repair 16% of exam
Fuel System Diagnosis and Repair 27% of exam
Starting System Diagnosis and Repair 6% of exam

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