Will Fuel Consumption Decrease After the First Maintenance?

[Denise]

New car fuel consumption reduction is unrelated to the first maintenance but is related to the break-in period. Relevant explanations are as follows: 1. Unrelated to the first maintenance: The first maintenance is done at a 4S shop, where the oil used is the same as that originally installed in the car, so there is no change in the oil aspect—it just becomes cleaner. Other aspects are merely routine checks, and the engine program will not be adjusted with a computer; at most, it checks for any fault codes and whether the data is normal. Therefore, fuel consumption is unrelated to the first maintenance items themselves. 2. Related to the break-in period: Fuel consumption has some relationship with the break-in period, but it is not significantly related to the mechanical break-in itself; rather, it is more related to the driver's habits. Mechanically, during the break-in period, the coordination between various moving parts is not yet perfect, resulting in relatively higher friction, less smooth movement, and greater resistance, which leads to higher fuel consumption.