The fuel consumption of Tiida shows 12- 13, is it very high? Is it accurate? How much will it differ from the actual situation?

You should be talking about instantaneous fuel consumption, that is, fuel consumption when speeding up refueling. The problem is abnormal. You can observe the fuel consumption displayed when driving at a constant speed of 50 or 60 miles, which is more accurate.

If you want to save fuel, you can turn off the throttle when the tachometer reaches 1800 to 2000 rpm, and the automatic gear will be upgraded by one gear to save fuel. You can explore slowly.

And if you want to calculate the accurate fuel consumption, you can fill up a tank of oil (you can see the oil level when you add it to the gun), run for 300-400 kilometers, then refuel, add it in to see the oil level, and see the liter on the tanker, so you can calculate the fuel consumption yourself. This method is more accurate.

It's best to get up early to refuel, because gasoline will expand in hot weather, leading to inaccurate values.