British Columbia Knowledge Test Coach
Safe drivingQuestion 31 of 412

Why is a leak in the exhaust system dangerous in winter?

  1. The engine can freeze.
  2. The tires lose grip.
  3. Carbon monoxide can collect inside the car.
  4. The battery can go flat.
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Correct answer: Carbon monoxide can collect inside the car.

Carbon monoxide is a harmful gas. A leak can let it enter the car.

Source: Learn to Drive Smart (ICBC, 2026), Chapter 2, You and your vehicle: Prepare for winter driving, page 26

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Questions last reviewed: 18 October 2026