1. fuel economy
fuel economy (Constant-Speed Fuel Economy) fuel economy means the fuel economy of automobiles constant speed indicators when driving on good roads. Because of constant travel is a basic condition of the car is running on the road, with this easy to measure fuel consumption, it is widely adopted. Such as France and Germany put 90Km / h and 120Km / h of constant fuel consumption as the main targets fuel economy. China is also using this indicator. Marked on the domestic automotive manuals hundred kilometers, it is generally constant fuel consumption. However, the automobile often accelerated in actual driving, deceleration, braking and engine idling and other various work of a few, so constant speed fuel consumption is often low, there is a large difference between the actual fuel consumption. Especially for often make short trips in the city car, the difference is even greater.
In practice, we can put manufacturers released fuel economy understood as: the lowest fuel consumption of the vehicle at 100 kilometers an ideal state.