Why is the first maintenance required after three months for a new car?

[ElleRose]

First maintenance involves changing the engine oil, which not only lubricates but also cleans. Components like the engine block and pistons in a new car are not yet properly broken in. The requirement to change the oil after three months or 3,000 kilometers is intended to clean out metal shavings and other impurities generated during the engine's break-in period, ensuring future performance. During the first maintenance, engine oil and the oil filter are mandatory replacements. Whether other items need to be changed depends on the vehicle's manual, as requirements vary by model. Of course, replacing the cabin air filter and engine air filter is even better, as these can be changed without strictly following the manual.