Question 5699
One way to save fuel in your vehicle is...
- using gasoline with an octane rating lower than the one specified by the manufacturer.
- coasting in neutral when going downhill.
- turning off the engine during prolonged periods of being stopped, such as traffic jams.
Show answer and explanation
Correct answer: turning off the engine during prolonged periods of being stopped, such as traffic jams.
When you are stopped for a long time, as in the traffic jam in the picture, turn off the engine, because at idle it keeps using fuel without getting you anywhere. Coasting downhill in neutral does not save fuel, and gasoline below the recommended octane rating makes the engine run poorly.