Revision question · Environmental issues

What are the consequences of driving your vehicle when it's emitting excessive exhaust smoke?

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

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Its fuel consumption will improve

Your vision ahead will be reduced

The brakes will fade more easily

You'll be breaking the law

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You'll be breaking the lawThis was the right answer

It's illegal to drive a vehicle that's emitting excessive exhaust smoke, so you should get the problem fixed as soon as you're aware of it. Excessive exhaust smoke increases pollution and creates a hazard for other road users.

Reviewed reading for this question

Report excessive smoke and do not exceed emission limitsReviewed guidance summary · The question concerns unlawful excessive smoke, not acceptable performance during a normal diesel journey.

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