ASE G1 Auto Maintenance & Light Repair Exam
Questions and Correct Answers Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1. What is the primary function of engine oil?
A. Increase combustion pressure
B. Lubricate moving parts
C. Cool the radiator
D. Clean fuel injectors
Answer: B
Rationale: Engine oil reduces friction between moving engine
components, preventing wear and overheating.
2. Which tool is used to measure tire tread depth?
A. Torque wrench
B. Feeler gauge
C. Tread depth gauge
,D. Dial indicator
Answer: C
Rationale: A tread depth gauge provides an accurate measurement of
remaining tire tread.
3. What does SAE stand for in oil grading?
A. System of Automotive Engines
B. Society of Automotive Engineers
C. Standard Automotive Efficiency
D. Service and Equipment Association
Answer: B
Rationale: SAE defines standardized viscosity ratings for engine oils.
4. A misfiring engine is most commonly caused by:
A. Dirty air filter
B. Faulty spark plug
C. Low tire pressure
D. Bad alternator belt
Answer: B
,Rationale: Spark plugs ignite the air-fuel mixture; failure leads to
misfires.
5. What component stores electrical energy in a vehicle?
A. Alternator
B. Starter motor
C. Battery
D. Voltage regulator
Answer: C
Rationale: The battery stores and supplies electrical energy for vehicle
systems.
6. Brake fade is typically caused by:
A. Overinflated tires
B. Excessive heat buildup
C. Low coolant level
D. Weak battery
Answer: B
Rationale: Heat reduces brake friction efficiency, causing fade.
, 7. The alternator primarily charges the:
A. Starter motor
B. Fuel pump
C. Battery
D. Ignition coil
Answer: C
Rationale: The alternator replenishes battery charge while the engine
runs.
8. What does ABS stand for?
A. Automatic Brake System
B. Anti-lock Braking System
C. Advanced Brake Support
D. Auxiliary Brake Sensor
Answer: B
Rationale: ABS prevents wheel lock-up during braking.
9. Which fluid is typically red or pink in color?
A. Engine oil
B. Brake fluid
Questions and Correct Answers Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary function of engine oil?
A. Increase combustion pressure
B. Lubricate moving parts
C. Cool the radiator
D. Clean fuel injectors
Answer: B
Rationale: Engine oil reduces friction between moving engine
components, preventing wear and overheating.
2. Which tool is used to measure tire tread depth?
A. Torque wrench
B. Feeler gauge
C. Tread depth gauge
,D. Dial indicator
Answer: C
Rationale: A tread depth gauge provides an accurate measurement of
remaining tire tread.
3. What does SAE stand for in oil grading?
A. System of Automotive Engines
B. Society of Automotive Engineers
C. Standard Automotive Efficiency
D. Service and Equipment Association
Answer: B
Rationale: SAE defines standardized viscosity ratings for engine oils.
4. A misfiring engine is most commonly caused by:
A. Dirty air filter
B. Faulty spark plug
C. Low tire pressure
D. Bad alternator belt
Answer: B
,Rationale: Spark plugs ignite the air-fuel mixture; failure leads to
misfires.
5. What component stores electrical energy in a vehicle?
A. Alternator
B. Starter motor
C. Battery
D. Voltage regulator
Answer: C
Rationale: The battery stores and supplies electrical energy for vehicle
systems.
6. Brake fade is typically caused by:
A. Overinflated tires
B. Excessive heat buildup
C. Low coolant level
D. Weak battery
Answer: B
Rationale: Heat reduces brake friction efficiency, causing fade.
, 7. The alternator primarily charges the:
A. Starter motor
B. Fuel pump
C. Battery
D. Ignition coil
Answer: C
Rationale: The alternator replenishes battery charge while the engine
runs.
8. What does ABS stand for?
A. Automatic Brake System
B. Anti-lock Braking System
C. Advanced Brake Support
D. Auxiliary Brake Sensor
Answer: B
Rationale: ABS prevents wheel lock-up during braking.
9. Which fluid is typically red or pink in color?
A. Engine oil
B. Brake fluid
