You are driving on a road with a speed limit of 110 km/h. How can you reduce fuel consumption?

Driving at a steady speed of 90 km/h is an effective way to reduce fuel consumption compared to driving at higher speeds. Vehicles typically achieve better fuel efficiency at lower speeds, as engine load and aerodynamic drag increase significantly with speed. Operating the vehicle at 90 km/h minimizes these factors, allowing for improved fuel economy.

Maintaining a consistent speed also avoids unnecessary acceleration and deceleration, which can lead to higher fuel usage. By driving steadily at 90 km/h, you optimize your fuel consumption and potentially extend the distance you can travel on a tank of fuel.

While the other options might seem valid, they either do not promote fuel efficiency as effectively or could lead to higher fuel consumption due to factors such as increased speed or fluctuating speeds.