Question 1576 · Truck theory test
What does blue smoke coming from the vehicle’s exhaust generally mean?
Pick an answer to test yourself.
Correct answer
The engine is burning oil.
Official explanation
A vehicle can give off blue smoke from the exhaust when it is burning oil. Poor maintenance and worn engines are typical causes. This blue smoke is harmful to the environment and may be costly. Drivers should have the vehicle checked by a competent person.
- Topic
- Safe & responsible driving · Environmental Matters and Eco-Friendly Driving
- Also in
- This question also appears in the bus theory test.
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