How would you ensure economic fuel consumption?

1. Correct answer: By shifting to the appropriate gear and maintaining a moderate driving speed of up to 90 k.p.h.
2. By driving in low gear and maintaining a driving speed of more than 120 k.p.h, without any aggressive accelerations or decelerations.
3. By shifting as much as possible to neutral gear while driving downhill.
4. By driving in low gear and maintaining a driving speed of more than 90 k.p.h.

WhyThe least fuel is used in the right gear at a moderate speed of up to 90 KPH. Neutral on a descent does not save fuel and is dangerous.