600 km new car, when the weather is hot, the fuel consumption rises from 7.8 to 8.6, and the road conditions and operation remain unchanged. What's going on here? Where should I check?

The first reason for the high fuel consumption of automobiles is the low driving skills. The same car, different people have different fuel consumption. Only by summing up experience and improving driving level can we solve the problem of high fuel consumption caused by driving technology.

The second reason for the high fuel consumption of automobiles is that there are problems with the spark plugs and high-voltage lines of gasoline vehicles, which leads to abnormal ignition circuits. Therefore, high fuel consumption can be solved by overhauling and replacing another part.

The third reason for the high fuel consumption of automobiles is that there is something wrong with the brake system, the brake pads do not return, and the driving resistance increases. Oil consumption can be reduced through maintenance and recycling.

The fourth reason for the high fuel consumption of automobiles: the automobile oil circuit is not smooth and the carbon deposit is blocked. Clean the fuel nozzle and throttle with fuel cleaner. Can reduce fuel consumption.

The fifth reason for the high fuel consumption of cars is that the air filter is dirty and the air is not smooth, which leads to the wrong oil-gas ratio. The filter element needs to be replaced.

The sixth reason of high fuel consumption of automobiles: high fuel consumption is caused by high temperature and humidity in summer and seasonality.

The seventh reason for the high fuel consumption of automobiles: fast driving speed, heavy automobile load and high fuel consumption.

The eighth reason for high fuel consumption of automobiles: gasoline quality is not up to standard, which leads to high fuel consumption.

The ninth reason of high fuel consumption of automobiles: metal wear. After running in for 2,000 kilometers, the surface roughness of cylinder wall and piston ring can be reduced to Ra=0.2 micron, the clearance between cylinder and piston is also the smallest, the valve seal is also the strictest, and the fuel consumption of automobile is naturally the least. After the average domestic car travels 50000- 100000 km, the metal friction surface is gradually worn and uneven. At this time, the wear rate is several times to ten times higher than that of a new car. After the metal is worn, the gap between other parts increases, the friction resistance increases, and the cylinder pressure decreases, which inevitably leads to oil channeling and gas channeling. Loss increases, efficiency decreases, power performance decreases, and automobile fuel consumption naturally increases. Some cars even consume 20-30% more fuel than new cars. In order to restore the high fuel consumption of a car to the standard of a new car, the most effective way in the past was to overhaul the boring cylinder and replace the piston and piston ring. Restore the dimensions of the original car parts. But the cost is high and the time is long. Recently, there is a new technology, which can improve the power and reduce the fuel consumption with extremely low wear and tear (approximately zero) when the car travels 654.38+ 10,000 kilometers.

I hope my answer can help you.