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What is the optimal mileage for breaking in a new car?

2 Answers

LeEvelyn

08/30/25 2:45am

New cars should undergo their first maintenance at 5,000 kilometers or within 6 months. Here are precautions for the break-in period of a new car: 1. Avoid starting without warming up the engine. It's best to allow a warm-up period after starting a new car to let the lubricating oil circulate and provide adequate lubrication. 2. Do not drive at high speeds. During the break-in period, it's recommended to keep the speed below 80 km/h, preferably not exceeding 100 km/h, and the engine RPM below 3,000. 3. Avoid overloading. Running at full capacity can damage mechanical components. It's best not to exceed 80% of the maximum load capacity. 4. Avoid long-distance driving. 5. Do not perform emergency braking. Emergency braking can impact the not-yet-fully-broken-in braking system and may also affect the chassis and engine. 6. Do not change the lubricating oil too early. The factory-installed lubricating oil in new cars is specifically designed for the break-in period and contains components suitable for this phase.

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OwenLynn

09/11/25 6:54am

I remember when I first started driving, experienced drivers always emphasized the importance of breaking in a new car, with the optimal period being around 1,500 kilometers. This helps engine components adapt to their new environment and reduces friction damage. Having driven several cars, I've found it's best to avoid high-speed driving or full-throttle acceleration during the first 1,000 to 1,500 kilometers. Maintaining speeds between 60 to 80 km/h and keeping RPMs below 3,000 allows pistons and cylinder liners to gradually wear in. Neglecting this break-in period may lead to increased engine noise and higher fuel consumption later on—I learned this the hard way when I got too excited about my first car change and took a long-distance trip, only to discover minor scoring during maintenance. It's advisable to check the engine oil every 300 kilometers and address any abnormalities promptly. Proper break-in will result in smoother performance and better durability.

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