Topic: Defensive and eco-driving · Nº 147 / 150

El hecho de llevar instalada una baca portaequipajes, aun sin transportar ningún tipo de carga en ella, ¿afecta al consumo de carburante del vehículo?
Does having a roof rack fitted, even without any load on it, affect the vehicle's fuel consumption?
- ANo, porque al no llevar peso el vehículo consume lo mismo.No, because with no weight on it the vehicle uses the same amount of fuel.
- BSí, porque la estructura de la baca reduce la aerodinámica del vehículo aumentado el consumo.Yes, because the roof rack structure makes the vehicle less aerodynamic, which increases consumption.
- CSí, el vehículo consumirá menos ya que la baca ejerce como elemento aerodinámico.Yes, the vehicle will use less fuel because the roof rack acts as an aerodynamic element.
Show answer
Correct answer
- BSí, porque la estructura de la baca reduce la aerodinámica del vehículo aumentado el consumo.Yes, because the roof rack structure makes the vehicle less aerodynamic, which increases consumption.
Explanation
When a vehicle's shape is designed, the aim is to give the least possible air resistance. Anything sticking out from the vehicle's body increases air resistance and fuel consumption. A roof rack increases consumption even when there is no load on it.
Independent app: not affiliated with or endorsed by the DGT (Spain's Directorate-General for Traffic) or the Ministry of the Interior. The official exam is booked with the DGT and taken at its test centres. The questions here are practice material; the DGT's official question bank is not public.