How many kilometers should a new car have before driving on the highway?

[Heidi]

A new car should have at least 5,000 kilometers before driving on the highway. Precautions during the break-in period include: 1. Warm up the engine before starting; 2. Avoid sudden braking; 3. Prevent overloading; 4. Avoid long-distance driving; 5. Do not drive at high speeds; 6. Use high-quality gasoline; 7. Do not remove the speed limiter prematurely; 8. Shift gears timely; 9. Properly adjust the ignition and fuel supply systems. Precautions for highway driving are: 1. The driver and front-seat passenger must fasten seat belts, and the driver should not use a phone while driving; 2. Avoid sharp turns of the steering wheel at high speeds; 3. Do not change lanes arbitrarily; when changing lanes or overtaking, turn signals must be activated in advance; 4. Only use adjacent lanes for overtaking and return to the original lane immediately after overtaking; do not straddle or drive on lane dividers; 5. No reversing, driving against traffic, crossing the central divider to turn or make a U-turn, test driving or driving a training vehicle, or overtaking or parking on ramps; 6. Maintain a following distance of over 100 meters; when speed is below 100 km/h, the distance can be appropriately shortened but should not be less than 50 meters.