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Question 4518

Does driving with the windows rolled down change the vehicle's aerodynamics?

  1. No, and it does not affect fuel consumption either.
  2. Yes, it increases fuel consumption.
  3. Yes, it reduces fuel consumption.
Show answer and explanation

Correct answer: Yes, it increases fuel consumption.

Yes. With the windows open, air enters the passenger compartment and slows the car down, so the engine needs more fuel to maintain the same speed. The faster you go, the greater the effect.

Manual II — Cuestiones de Seguridad Vial