In Serbian vehicle safety and regulations, why is coasting in gear (deceleration fuel cutoff) more efficient than idling in neutral when slowing down?
Answer and explanation
Correct answer: A. Engine cuts fuel injection completely when coasting in gear
- Step 1: Modern engines shut off fuel injection completely when coasting in gear above idle RPM, whereas neutral idling consumes fuel. Answer: Engine cuts fuel injection completely when coasting in gear. Why not the others: the alternative options do not represent statutory provisions under Serbian vehicle safety and technical regulations.
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