ASE AUTOMOTIVE CERTIFICATION EXAMINATION PRACTICE TEST QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE|
INSTANT DOWNLOAD PDF
Core Domains
- Engine Repair (A1)
- Automatic Transmission/Transaxle (A2)
- Manual Drive Train & Axles (A3)
- Suspension & Steering (A4)
- Brakes (A5)
- Electrical/Electronic Systems (A6)
- Heating & Air Conditioning (A7)
- Engine Performance (A8)
This practice examination is designed to prepare automotive technicians for the ASE Certification
Examination, the industry-standard credential for automotive repair professionals in the United States. The
exam assesses comprehensive knowledge across eight core subject areas covering engine repair, transmission
systems, drive train, suspension and steering, brakes, electrical systems, HVAC, and engine performance. The
multiple-choice and scenario-based structure mirrors the actual ASE testing format, featuring "Technician A
says... Technician B says..." scenarios that require critical diagnostic reasoning. Emphasis is placed on real-
world application and decision-making, reward ing technicians who understand the diagnostic reasoning
behind repairs rather than simple fact memorization. Success on this examination demonstrates readiness for
professional certification and career advancement in automotive service.
,SECTION ONE: QUESTIONS 1–100
Question 1
A 2018 vehicle with 85,000 miles exhibits low oil pressure at idle that increases slightly with engine speed. The
oil has been changed recently with the correct viscosity. What is the MOST likely cause?
A. Clogged oil filter
B. Worn oil pump
C. 🟢 Worn engine bearings
D. Dirty oil passages
🔴 RATIONALE: Low oil pressure at idle that improves with engine speed is characteristic of worn engine
bearings. As engine speed increases, the oil pump produces more flow, temporarily compensating for the
bearing clearance. A clogged filter would cause pressure to drop at higher speeds, and a worn oil pump would
show low pressure across all speeds.
Question 2
During a cylinder leakage test on a 4-cylinder engine, Cylinder 3 shows 45% leakage with air heard at the
exhaust pipe. What does this indicate?
,A. 🟢 Leaking exhaust valve
B. Worn piston rings
C. Leaking intake valve
D. Blown head gasket
🔴 RATIONALE: Air heard at the exhaust pipe during a cylinder leakage test indicates an exhaust valve leak.
Air at the oil fill indicates piston ring leakage, air at the intake indicates an intake valve leak, and air at adjacent
cylinders indicates a head gasket leak between cylinders.
Question 3
Technician A says clutch pedal free play should be 1/2 to 1 inch. Technician B says excessive clutch free play will
cause clutch slippage. Who is correct?
A. Technician A only
B. 🟢 Technician A only
C. Both technicians
D. Neither technician
🔴 RATIONALE: Technician A is correct that clutch pedal free play should typically be 1/2 to 1 inch. Technician
B is incorrect because excessive free play causes incomplete clutch engagement (chattering), while
INSUFFICIENT free play causes slippage. The free play allows the clutch to fully engage.
, Question 4
A vehicle with independent rear suspension exhibits tire wear on the outer edge of the right rear tire. The
alignment scores show -2.5° camber on the right rear and +1.0° on the left rear. What is the MOST likely cause?
A. 🟢 Excessive negative camber on right rear
B. Excessive positive toe on right rear
C. Worn strut bushings
D. Incorrect tire pressure
🔴 RATIONALE: Excessive negative camber causes outer edge tire wear because the tire leans inward, putting
more weight on the outer edge. The right rear has -2.5° camber which is outside normal specifications (typically
-1° to 0° for independent rear suspension). Positive toe causes inner edge wear, not outer.
Question 5
When diagnosing a brake pedal that pulsates during application, Technician A says the most likely cause is
warped rotor. Technician B says the first step should be measuring rotor thickness variation. Who is correct?
A. Technician A only
B. Technician B only
C. 🟢 Both technicians
D. Neither technician
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE|
INSTANT DOWNLOAD PDF
Core Domains
- Engine Repair (A1)
- Automatic Transmission/Transaxle (A2)
- Manual Drive Train & Axles (A3)
- Suspension & Steering (A4)
- Brakes (A5)
- Electrical/Electronic Systems (A6)
- Heating & Air Conditioning (A7)
- Engine Performance (A8)
This practice examination is designed to prepare automotive technicians for the ASE Certification
Examination, the industry-standard credential for automotive repair professionals in the United States. The
exam assesses comprehensive knowledge across eight core subject areas covering engine repair, transmission
systems, drive train, suspension and steering, brakes, electrical systems, HVAC, and engine performance. The
multiple-choice and scenario-based structure mirrors the actual ASE testing format, featuring "Technician A
says... Technician B says..." scenarios that require critical diagnostic reasoning. Emphasis is placed on real-
world application and decision-making, reward ing technicians who understand the diagnostic reasoning
behind repairs rather than simple fact memorization. Success on this examination demonstrates readiness for
professional certification and career advancement in automotive service.
,SECTION ONE: QUESTIONS 1–100
Question 1
A 2018 vehicle with 85,000 miles exhibits low oil pressure at idle that increases slightly with engine speed. The
oil has been changed recently with the correct viscosity. What is the MOST likely cause?
A. Clogged oil filter
B. Worn oil pump
C. 🟢 Worn engine bearings
D. Dirty oil passages
🔴 RATIONALE: Low oil pressure at idle that improves with engine speed is characteristic of worn engine
bearings. As engine speed increases, the oil pump produces more flow, temporarily compensating for the
bearing clearance. A clogged filter would cause pressure to drop at higher speeds, and a worn oil pump would
show low pressure across all speeds.
Question 2
During a cylinder leakage test on a 4-cylinder engine, Cylinder 3 shows 45% leakage with air heard at the
exhaust pipe. What does this indicate?
,A. 🟢 Leaking exhaust valve
B. Worn piston rings
C. Leaking intake valve
D. Blown head gasket
🔴 RATIONALE: Air heard at the exhaust pipe during a cylinder leakage test indicates an exhaust valve leak.
Air at the oil fill indicates piston ring leakage, air at the intake indicates an intake valve leak, and air at adjacent
cylinders indicates a head gasket leak between cylinders.
Question 3
Technician A says clutch pedal free play should be 1/2 to 1 inch. Technician B says excessive clutch free play will
cause clutch slippage. Who is correct?
A. Technician A only
B. 🟢 Technician A only
C. Both technicians
D. Neither technician
🔴 RATIONALE: Technician A is correct that clutch pedal free play should typically be 1/2 to 1 inch. Technician
B is incorrect because excessive free play causes incomplete clutch engagement (chattering), while
INSUFFICIENT free play causes slippage. The free play allows the clutch to fully engage.
, Question 4
A vehicle with independent rear suspension exhibits tire wear on the outer edge of the right rear tire. The
alignment scores show -2.5° camber on the right rear and +1.0° on the left rear. What is the MOST likely cause?
A. 🟢 Excessive negative camber on right rear
B. Excessive positive toe on right rear
C. Worn strut bushings
D. Incorrect tire pressure
🔴 RATIONALE: Excessive negative camber causes outer edge tire wear because the tire leans inward, putting
more weight on the outer edge. The right rear has -2.5° camber which is outside normal specifications (typically
-1° to 0° for independent rear suspension). Positive toe causes inner edge wear, not outer.
Question 5
When diagnosing a brake pedal that pulsates during application, Technician A says the most likely cause is
warped rotor. Technician B says the first step should be measuring rotor thickness variation. Who is correct?
A. Technician A only
B. Technician B only
C. 🟢 Both technicians
D. Neither technician
