How can we lower the vehicle’s fuel consumption?

1. Make sure to drive in the lowest gear.
2. Fill up the vehicle with a lower octane fuel than required.
3. Make as many strong engine accelerations as possible.
4. Correct answer: Change gear according to the correct speed and road conditions and avoid high engine revolutions.

WhyFuel consumption goes down with the right gear for the speed and road and by avoiding high revs. Low-octane fuel will not help.