Will Fuel Consumption Decrease After the First Maintenance of a New Car?

[VanAdalynn]

New car fuel consumption is unrelated to the first maintenance but related to the break-in period. Here is the relevant information: 1. First maintenance: The first maintenance is done at a 4S dealership, where the oil used is the same as the original oil in the car, so there is no change in the oil itself—it just becomes cleaner. Other aspects are just routine checks, and the engine program will not be adjusted via computer; at most, they will check for any fault codes and whether the data is normal. Therefore, fuel consumption is unrelated to the first maintenance itself. 2. Break-in period: Fuel consumption is somewhat related to the break-in period, but it is not significantly tied to the mechanical break-in itself—it has more to do with the driver. Mechanically, during the break-in period, the fit between moving parts is not yet perfect, resulting in relatively higher friction, less smooth movement, and greater resistance, which leads to higher fuel consumption.