How Long Is the Break-in Period for a Car?
2 Answers
The break-in period for a car ranges from 1,000 km to 3,000 km, which is divided into three phases: the initial 100 km, the early break-in phase of 200 km, and the formation of an oxidation film over 1,000 km. The characteristics of driving during the break-in period include rough surfaces and small clearances between components, which can cause engine oil to oxidize and degrade more easily. Precautions during the break-in period include: 1. Preheating the engine before starting to adjust oil pressure and fuel injection; 2. Controlling driving speed and avoiding sudden braking; 3. Avoiding excessive loads; 4. Preventing the removal of speed limiters; 5. Properly adjusting the ignition and fuel supply systems; 6. Shifting gears in a timely manner; and 7. Avoiding prolonged high-speed driving.
I always keep the break-in period in mind when driving a new car, usually the first 1,000 kilometers or so, which takes about one to three months depending on how you drive. The metal components inside a new engine need to gradually wear in smoothly, so avoid slamming the accelerator or braking hard right away—that causes excessive wear. I recommend keeping speeds under 100 km/h during this period and avoiding prolonged high-speed driving or fully loaded long-distance trips. After completing around 1,500 kilometers, the engine performance stabilizes, and fuel efficiency improves noticeably. Occasionally, I hear friends complain about minor issues with their new cars shortly after purchase, and upon asking, it’s often due to neglecting the break-in period. Remember to also check the engine oil and coolant regularly to ensure smooth operation.
