Q: What factors affect fuel economy?

asked by on December 15, 2015

What factors affect fuel economy?

Your Accord came with a window sticker that explained the miles per gallon the car was rated for under different driving conditions, such as highway driving, city driving, and also provided a combined total. It’s important that you understand these are not definitive numbers – many factors affect fuel economy. These include:

  • Idling – The longer you idle, the more fuel you use without actually traveling any distance.

  • Hard Acceleration – Hard acceleration uses more fuel than normal acceleration.

  • Low Tire Pressure – Low pressure in your tires can reduce fuel economy (the engine has to work harder to turn the wheels).

  • Hard Braking – Sudden braking wastes fuel.

  • Cold Engine – Not letting your engine warm up to normal operating temperature before driving can reduce fuel economy.

  • Using the Air Conditioner – Using the air conditioner places an additional load on the engine, increasing fuel consumption.

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