Quote:
Originally Posted by fatjoez
Can someone please, do me a favour, and explain the science/logic behind the 135i burning
39.5L/100KM petrol @ a traffic light/idling
0.0L/100KM petrol @ rolling down a hill with foot off accelerator
much appreciated..
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When you're idling, you're moving zero distance while using fuel. That should theoretically give you a consumption of infinite litres per 100km. You are burning fuel but not moving at all. Our consumption metre can only show a maximum of 39.5L.
When you're coasting down a hill in gear, no fuel is injected into the engine. The spinning of the wheels keep the engine running, so you're effectively using no fuel to travel the given distance. Hence, 0L/100km.
Make sense?