How to Save Fuel Analyze the Three Factors Affecting Vehicle Fuel Consumption

- Apr 11, 2018-

How to Save Fuel Analyze the Three Factors Affecting Vehicle Fuel Consumption


The fuel consumption of a car is a concern for car owners, but how can you judge the fuel consumption of a car when you cannot actually test it? Even if you know the fuel consumption of your car, do you know why it saves fuel or oil? Below, I will give some practical examples to answer your fuel consumption problems.

Engine Technology

The fact that large-displacement vehicles are more costly is what many people will have, and in fact it is indeed the case. The country will therefore strongly encourage the consumption of small-displacement vehicles. However, this law can easily be broken when there is a large gap in engine technology. To give an intuitive example, the fuel consumption of the 1.3L manual transmission model of Swift (quotation picture parameter) is 6.73L/100km, and the engine of 1.5L model adopts VVT variable valve timing technology, and the fuel consumption is only 6.70L, 1.3L models are also fuel-efficient, which is the benefits of advanced technology.

In addition, the Mazda S-VT variable valve system, the VIS variable intake manifold system, the VTCS variable eddy current control system, and the VAD variable intake system of the Mazda 2's 1.5L model have reduced the fuel consumption to 6.35. L/100km is more fuel efficient than many 1.0L models. Therefore, it must be said that the technical level of the engine is somewhat more significant than the effect of displacement on fuel consumption.

Transmission form

The effect of the transmission on fuel consumption is also obvious, but for different models, the extent of this effect is also different. For example, for an economically-conscious family car like Elantra, the fuel consumption of the 1.6L manual transmission is 6.7L/100km, and the automatic transmission number is 7.1L/100km. The difference is not significant. The Corolla manual transmission is 7.3L/100km. The automatic transmission is 7.4L/100km. The difference is more accurate because they are more economical in the adjustment of the automatic transmission. They will shift the timing ahead of time and sacrifice some power to achieve the purpose of fuel economy.

The opposite example is Fox, we all know that it is a sports car that pays attention to sports performance. Its manual transmission model has a fuel consumption of 7.6L/100km, while the automatic transmission reaches 8.6L/100km. The difference is quite large. This is Because it will delay the shift timing to obtain more abundant acceleration force.

Body weight

Many caring owners will often clean out the useless things on the car. He all knows that weight has an effect on the fuel consumption of the car, but how large is this effect? We still give an example, QQ3 1.1L manual transmission model weight 890kg, fuel consumption is 6.6L/100km; with its use of the same engine QQ6 manual transmission model weight is 990kg, fuel consumption is 7.0L/100kg. The 100kg weight difference caused a 0.4L/100km difference in fuel consumption. Of course, this ratio can not be obtained on other models, but we can understand a trend from this, the impact of weight on fuel consumption can not be ignored.

Understand these three points, plus the basic judgment of displacement, you will have a rough estimate of the fuel consumption of a car when you buy a car, but also understand why a car is fuel-efficient, what it sacrificed to save fuel, Is it something that you just don't want to sacrifice, and in this way, you're closer to the model that really suits you.