Correct answer
No; it removes engine braking and does not guarantee fuel savings.
No. It removes engine braking and does not guarantee fuel savings. With a gear engaged and the accelerator released, injection can cut fuel during overrun when system conditions are met; in neutral the engine needs fuel to idle. Operation depends on the vehicle. Use a gear suitable for the descent and follow manufacturer guidance.
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Yes; coasting in neutral always reduces fuel use.
Yes; the DGT recommends downhill coasting in neutral to save fuel.
No; it removes engine braking and does not guarantee fuel savings.
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