NYC CUNY AUTO MECHANIC EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
Core Domains
,Internal Combustion Engine Principles and Repair
Brake Systems (Drum, Disc, and ABS)
Electrical and Electronic Systems
Engine Performance and Diagnostics
Automatic Transmission and Transaxle
Manual Drive Train and Axles
Steering and Suspension Systems
Heating and Air-Conditioning
Heating and Air-Conditioning Systems
Safety Procedures and Shop Practices
Diagnostic Techniques and Computer-Based Testing
Regulatory Compliance and Ethics Core Domains
Internal Combustion Engine Principles and Repair
Brake Systems (Drum, Disc, and ABS)
Electrical and Electronic Systems
Engine Performance and Diagnostics
Automatic Transmission and Transaxle
,Manual Drive Train and Axles
Steering and Suspension Systems
Heating and Air-Conditioning Systems
Safety Procedures and Shop Practices
Diagnostic Techniques and Computer-Based Testing Introduction
This exam assesses comprehensive knowledge and practical skills required for professional automotive
mechanic certification under the NYC CUNY program. Candidates will demonstrate mastery of internal
combustion engine operation, brake system diagnostics, electrical systems, transmission repair,
steering/suspension, and HVAC systems. The multiple-choice and scenario-based structure emphasizes real-
world application, requiring candidates to analyze diagnostic situations, select appropriate repair procedures,
and make critical decision-making judgments. The exam prioritizes practical competency over theoretical
recall, ensuring mechanics can safely and effectively service modern vehicles while adhering to regulatory
standards and professional ethics.
Section One: Questions 1–100
Question 1
What is the primary function of engine oil in a vehicle?
A. To cool the exhaust system
B. To prevent wear between moving engine components
C. To increase tire friction
D. To charge the alternator
🟢 Correct answer: B
, 🔴 RATIONALE: Engine oil's primary function is to lubricate moving engine components, reducing friction and
preventing wear. While oil also helps cool the engine slightly, its main purpose is wear prevention through
lubrication.
Question 2
Which fluid is essential for the hydraulic brake system to function properly?
A. Engine oil
B. Transmission fluid
C. Brake fluid
D. Coolant
🟢 Correct answer: C
🔴 RATIONALE: Brake fluid is the hydraulic medium that transfers force from the brake pedal to the brake
components at each wheel. Without brake fluid, the hydraulic brake system cannot transmit pressure and will
fail.
Question 3
What is the purpose of a catalytic converter in a vehicle?
A. To increase engine horsepower
B. To reduce harmful emissions by converting them to less harmful gases
C. To improve tire grip on wet roads
D. To store excess battery charge
ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
Core Domains
,Internal Combustion Engine Principles and Repair
Brake Systems (Drum, Disc, and ABS)
Electrical and Electronic Systems
Engine Performance and Diagnostics
Automatic Transmission and Transaxle
Manual Drive Train and Axles
Steering and Suspension Systems
Heating and Air-Conditioning
Heating and Air-Conditioning Systems
Safety Procedures and Shop Practices
Diagnostic Techniques and Computer-Based Testing
Regulatory Compliance and Ethics Core Domains
Internal Combustion Engine Principles and Repair
Brake Systems (Drum, Disc, and ABS)
Electrical and Electronic Systems
Engine Performance and Diagnostics
Automatic Transmission and Transaxle
,Manual Drive Train and Axles
Steering and Suspension Systems
Heating and Air-Conditioning Systems
Safety Procedures and Shop Practices
Diagnostic Techniques and Computer-Based Testing Introduction
This exam assesses comprehensive knowledge and practical skills required for professional automotive
mechanic certification under the NYC CUNY program. Candidates will demonstrate mastery of internal
combustion engine operation, brake system diagnostics, electrical systems, transmission repair,
steering/suspension, and HVAC systems. The multiple-choice and scenario-based structure emphasizes real-
world application, requiring candidates to analyze diagnostic situations, select appropriate repair procedures,
and make critical decision-making judgments. The exam prioritizes practical competency over theoretical
recall, ensuring mechanics can safely and effectively service modern vehicles while adhering to regulatory
standards and professional ethics.
Section One: Questions 1–100
Question 1
What is the primary function of engine oil in a vehicle?
A. To cool the exhaust system
B. To prevent wear between moving engine components
C. To increase tire friction
D. To charge the alternator
🟢 Correct answer: B
, 🔴 RATIONALE: Engine oil's primary function is to lubricate moving engine components, reducing friction and
preventing wear. While oil also helps cool the engine slightly, its main purpose is wear prevention through
lubrication.
Question 2
Which fluid is essential for the hydraulic brake system to function properly?
A. Engine oil
B. Transmission fluid
C. Brake fluid
D. Coolant
🟢 Correct answer: C
🔴 RATIONALE: Brake fluid is the hydraulic medium that transfers force from the brake pedal to the brake
components at each wheel. Without brake fluid, the hydraulic brake system cannot transmit pressure and will
fail.
Question 3
What is the purpose of a catalytic converter in a vehicle?
A. To increase engine horsepower
B. To reduce harmful emissions by converting them to less harmful gases
C. To improve tire grip on wet roads
D. To store excess battery charge
