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142+ Free Red Seal Automotive Practice Questions

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ArticleRed Seal Automotive Service Technician Exam 2026: New 125-Question Blueprint13 min read
2026 Statistics

Key Facts: Red Seal Automotive Exam

100

Practice Questions

OpenExamPrep

125

Exam Questions

Red Seal

70%

Passing Score

Red Seal

4 hours

Time Allowed

Red Seal

8 activities

Current Blueprint

Red Seal

310S

Ontario Trade Code

Skilled Trades Ontario

The current national Automotive Service Technician Red Seal exam has 125 four-option multiple-choice questions in four hours and requires 70%. Its eight major work activities carry 9/22/12/17/23/23/10/9 questions, including separate vehicle-module-communications and hybrid/EV activities. The national title is Automotive Service Technician; 310S is Ontario's trade code. Apply jurisdiction-specific rules only through the responsible provincial or territorial authority.

Sample Red Seal Automotive Practice Questions

Try these sample questions to test your Red Seal Automotive exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 142+ question experience with AI tutoring.

1When working under a vehicle raised on a hoist, what is the correct procedure before going underneath?
A.Engage the hoist safety locks (mechanical locking devices) and confirm they are set
B.Leave the vehicle resting only on the hydraulic cylinders
C.Place a single bottle jack under the frame as the sole support
D.Lower the hoist to its lowest working height and remove the arms
Explanation: A hoist must be raised to a height where its mechanical safety locks (lock pawls) engage, and the technician must confirm the locks are set before going underneath. Hydraulic pressure alone can bleed off and is never an acceptable sole support.
2A Safety Data Sheet (SDS) for a solvent used in the shop primarily provides what information under WHMIS 2015?
A.Hazard identification, safe handling, first aid, and PPE for the product
B.The vehicle's recommended service intervals
C.The manufacturer's warranty terms for the product
D.Only the product's purchase price and supplier contact
Explanation: Under WHMIS 2015 (aligned with GHS), a 16-section SDS lists hazard identification, composition, first-aid and firefighting measures, safe handling/storage, exposure controls, and required PPE. It is the primary reference for working safely with a controlled product.
3Which personal protective equipment is required when servicing a high-voltage battery system on an electric vehicle?
A.Class 0 (1000 V rated) insulating rubber gloves with leather protectors
B.Standard nitrile disposable gloves
C.Cotton work gloves
D.No gloves, only safety glasses
Explanation: EV high-voltage systems can exceed 400 V DC, so technicians must use Class 0 insulating rubber gloves rated to 1000 V with leather protectors, and verify the system is de-energized before service. Ordinary gloves provide no electrical protection.
4A torque-to-yield (TTY) cylinder head bolt should be:
A.Discarded and replaced with a new bolt after removal
B.Reused and tightened to the same torque each time
C.Cleaned, oiled, and reused indefinitely
D.Tightened only by feel without a torque sequence
Explanation: Torque-to-yield bolts are tightened past their elastic limit into permanent stretch to maintain clamping load, so they cannot be reused; they must be replaced and torqued following the manufacturer's angle/torque sequence. Reusing a stretched TTY bolt risks failure.
5What is the correct way to dispose of used engine oil and oil filters in a Canadian shop?
A.Collect them for recycling through an approved used-oil management program
B.Pour the oil down the floor drain after filtering
C.Mix the oil with gasoline and burn it
D.Place filters directly in regular garbage without draining
Explanation: Used oil and filters are regulated materials and must be collected and sent to an approved used-oil recycling/management program. Provincial regulations prohibit drain disposal or burning, and filters must be drained before recycling.
6When reading a wiring diagram, a heavy solid line connected to a ground symbol most likely represents:
A.A grounded circuit return path to the battery negative
B.A high-pressure fuel line
C.A vacuum hose routing
D.A coolant passage
Explanation: In automotive wiring diagrams a ground symbol indicates the circuit's return path to battery negative through the chassis/body. Interpreting ground points is essential for diagnosing voltage-drop and open-ground faults.
7A four-stroke gasoline engine completes its power cycle in how many crankshaft revolutions?
A.Two crankshaft revolutions (720 degrees)
B.One crankshaft revolution (360 degrees)
C.Four crankshaft revolutions
D.Half a crankshaft revolution (180 degrees)
Explanation: A four-stroke engine completes intake, compression, power, and exhaust in two full crankshaft revolutions (720 degrees), during which the camshaft turns once. Each stroke corresponds to 180 degrees of crankshaft rotation.
8During a cylinder compression test, one cylinder reads low but the reading rises significantly after a small amount of oil is added (wet test). This indicates:
A.Worn piston rings or cylinder walls
B.A burnt exhaust valve
C.A blown head gasket between two cylinders
D.A cracked cylinder head
Explanation: Adding oil temporarily seals the rings against the cylinder wall; if compression rises markedly, the leak is past the rings (worn rings/cylinder). If the reading stayed low, the fault would be a valve or gasket where oil cannot seal.
9On a port fuel-injected engine, a stuck-open fuel pressure regulator (excess vacuum reference) would most likely cause:
A.Low fuel pressure and a lean running condition
B.Excessively high fuel pressure
C.No effect on fuel pressure
D.A coolant leak into the cylinder
Explanation: A vacuum-referenced regulator bleeds fuel back to the tank; if it stays open or sees too much vacuum, fuel pressure drops, leaning out the mixture. A leaking diaphragm can also draw fuel into the intake via the vacuum line.
10A diagnostic trouble code P0301 indicates:
A.A misfire detected in cylinder number 1
B.A lean condition on bank 1
C.An EGR flow fault
D.A camshaft position sensor circuit fault
Explanation: In OBD-II, P030X codes are misfire codes where the last digit identifies the cylinder; P0301 is a cylinder 1 misfire. The PCM flags a misfire when it detects crankshaft speed variation greater than about 2 percent for that cylinder.

About the Red Seal Automotive Exam

The national Red Seal Automotive Service Technician exam uses the current 2023-RSOS eight-activity blueprint: 9, 22, 12, 17, 23, 23, 10, and 9 questions. The 310S code is specific to Ontario, while eligibility, fees, scheduling, and rewrite rules are controlled by each jurisdiction.

Assessment

125 four-option multiple-choice questions across eight current major work activities, with one correct answer per item and a 70% passing mark. This free bank provides 100 selected-response practice items.

Time Limit

4 hours

Passing Score

70%

Exam Fee

Set by the responsible provincial or territorial apprenticeship authority (Employment and Social Development Canada / Red Seal Program (delivered by provincial apprenticeship authorities))

Red Seal Automotive Exam Content Outline

7.2%

A - Common Occupational Skills

9 questions: safety-related functions plus tools, equipment, and documentation.

17.6%

B - Engine and Engine-Support Systems

22 questions: diagnosis and repair of engine, gasoline support, and diesel support systems.

9.6%

C - Vehicle-Module Communications

12 questions: eight diagnosis and four repair questions for vehicle networking systems.

13.6%

D - Driveline Systems

17 questions: ten diagnosis and seven repair questions for driveline systems.

18.4%

E - Electrical and Comfort Controls

23 questions: electrical and HVAC or comfort-control diagnosis and repair.

18.4%

F - Steering, Suspension, Braking, Controls, Tires, Hubs and Bearings

23 questions: 13 diagnosis and 10 repair questions across chassis and control systems.

8%

G - Restraints, Body, Accessories and Trim

10 questions: six diagnosis and four repair questions.

7.2%

H - Hybrid and Electric Vehicle Systems

9 questions: five diagnosis and four repair questions, including current high-voltage work.

How to Pass the Red Seal Automotive Exam

What You Need to Know

  • Passing score: 70%
  • Assessment: 125 four-option multiple-choice questions across eight current major work activities, with one correct answer per item and a 70% passing mark. This free bank provides 100 selected-response practice items.
  • Time limit: 4 hours
  • Exam fee: Set by the responsible provincial or territorial apprenticeship authority

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

Red Seal Automotive Study Tips from Top Performers

1Use the current 9/22/12/17/23/23/10/9 activity counts, then add time where your own experience is weakest.
2Practice diagnostic reasoning, not just recall - roughly 40-50% of questions ask you to interpret data and reach a valid conclusion
3Know your core electrical math: Ohm's law (I = V/R), power (P = V x I), and series/parallel resistance, plus voltage-drop testing
4Memorize key values: stoichiometric 14.7:1, charging 13.5-14.5 V, battery load-test minimum 9.6 V, and fully charged specific gravity 1.265
5Understand OBD-II code structure (P/B/C/U prefixes), misfire codes (P030X), freeze-frame data, and CAN bus 60-ohm termination
6Complete all 100 practice questions and review every miss with the AI tutor before sitting the exam

Frequently Asked Questions

How many questions are on the Red Seal Automotive Service Technician exam?

The current national exam has 125 four-option multiple-choice questions across eight major work activities and allows four hours. You need 70% to pass.

What score do I need to pass the Automotive Service Technician Red Seal exam?

You need at least 70%. The current official mix emphasizes procedural/application and critical-thinking questions, so preparation should include diagnostic reasoning rather than fact recall alone.

How much does the Automotive Service Technician Red Seal exam cost?

The candidate's provincial or territorial authority sets the fee and any rewrite or equivalency charges. Confirm the current amount directly with that authority.

What topics does the current Red Seal Automotive exam cover?

It has eight official activities: common skills; engines; vehicle-module communications; driveline; electrical and comfort controls; chassis systems; restraints and body; and hybrid/EV systems.

Who is eligible to write the Automotive Service Technician Red Seal exam?

Each province or territory determines apprenticeship, trade-qualifier, and equivalency eligibility. Apply through the authority responsible for the jurisdiction where you will write.

Is this free 310S practice test as good as paid prep?

The free bank is a study aid mapped to the current eight-activity blueprint. Use official sample questions for format, and map each practice miss to a current RSOS task rather than memorizing answers.