Revision question · Environmental issues

What can cab-mounted wind deflectors reduce?

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.

Answer options

Journey times

Load capacity

Tyre wear

Fuel consumption

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Fuel consumptionThis was the right answer

A wind deflector redirects the air flow around the vehicle. This reduces the amount of energy required to drive the vehicle forward and so saves fuel.

Reviewed reading for this question

Reduce the air resistance the engine must overcomeReviewed guidance summary · The direct function is drag reduction, leading to lower fuel consumption, not braking or protection from spray.

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