Revision question · Safety and your vehicle

Why do MOT tests include an exhaust emission test?

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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To recover the cost of expensive garage equipment

To help protect the environment against pollution

To discover which fuel supplier is used the most

To make sure diesel and petrol engines emit the same fumes

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To help protect the environment against pollutionThis was the right answer

Emission tests are carried out to make sure your vehicle’s engine is operating efficiently. This ensures the pollution produced by the engine is kept to a minimum. If your vehicle isn't serviced regularly, it may fail the MOT emissions test.

Reviewed reading for this question

Keep exhaust emissions within limitsReviewed guidance summary · Vehicle exhaust emissions must remain within prescribed limits, so testing helps control pollution.

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