idle speed means that the engine does not work hard，The car is in a static state，But the engine is still consuming fuel。Display according to the relevant test data，The fuel consumption of idling conditions is about 1 ~ 2L/H，At present, 92 gasoline is nearly 7.15 (yuan/liter)，Because the fuel consumption of 100 kilometers per car is different，How many kilometers do you run less for your car for a long time，I believe you have a standard answer。

The most critical long -term idle speed will also cause engine carbon deposit due to insufficient burning in the cylinder，This causes high fuel consumption、engine jitter、Acceleration weakness, etc.。

The physical principle of braking is to convert the kinetic energy of the car into thermal energy consumption，and the kinetic energy comes from the power provided by the engine，Require fuel combustion work to provide，Therefore, frequent brakes will naturally get fuel consumption。Of course，For safety considerations，The necessary brakes are also certain。

The throttle is the measurement fuel seabet ioflow of the fuel regulator，to determine the thrust generated by the engine。This means，Stepping on the accelerator will make more fuels spray。On the highway，Open a fixed -speed cruise or adaptive cruise，Driving at a constant speed can reduce fuel waste。

Although household cars are equipped with trunk to store items，But too many items are stacked in the trunk and will increase the weight。High load compared to the case without load，To get the same speed means more motivation，That also means that fuel consumption will also increase。