Question

why we use so much fuel

Answer 1

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Either method of achieving a civilised ambient temperature can be wrong, depending on your speed. Air conditioning uses fuel, and having the windows down causes drag, which uses up fuel too. At low speeds, the fuel used to compensate for drag is less than the fuel used to power your air con, so open the window

Answer 2

The following are common causes of poor fuel economy that may or may not turn on your Check Engine Light:

•Sluggish Oxygen Sensors.

•Inaccurate or Defective Coolant Sensor.

•Defective Engine Thermostat.

•Engine Misfire.

•Intake Manifold or EGR Valve Leak.

•Worn or Fouled Spark Plugs.

•Dirty Fuel Injectors.

•Low Compression.

*****Either method of achieving a civilised ambient temperature can be wrong, depending on your speed. Air conditioning uses fuel, and having the windows down causes drag, which uses up fuel too. At low speeds, the fuel used to compensate for drag is less than the fuel used to power your air con, so open the window.



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