
New car running-in speed is generally 50-90km/h, with some models allowing slightly higher speeds, but not exceeding 110km/h. Below are the relevant details: Precautions during the running-in period: During the running-in period, avoid excessive engine load, prolonged driving, especially prolonged high-speed driving. Operate each gear gently, avoid sudden acceleration, and start or climb slopes smoothly, avoiding overly aggressive maneuvers. Speed and RPM for various running-in stages of a new car: For the first 500 kilometers of a new car, maintain a speed of 60-70 mph with RPM not exceeding 2200. From 500 to 1000 kilometers, during the mid-running-in period, keep speed at 90-100 km/h with RPM below 2500. From 1000 to 1500 kilometers, in the late running-in period, speed can be increased to below 120 mph with RPM not exceeding 3000.

I've been driving for over a decade, and breaking in a new car is quite particular. With older cars, it was best not to exceed 80 kilometers per hour within the first 1,000 kilometers. Nowadays, with technological advancements, many car manuals say there's no need for deliberate break-in. But based on my personal experience, it's still better to be cautious with a new car. Keep it under 100 km/h for the first 500 kilometers, avoid speeding on highways, and don't worry too much about speed in the city—just keep the RPM below 3,000. The key points are to avoid sudden acceleration and hard braking, not to overload the car on long trips, and to vary your speed instead of using cruise control all the time. The engine, transmission, and brake discs all need time to adapt gradually, especially with turbocharged engines nowadays—they require even gentler handling. After 2,000 kilometers, you can drive normally, but remember to get the first maintenance service and change the oil on time.

As a car enthusiast, I believe the break-in period isn't that rigid about speed. The key is gentle driving within the first 1,600 kilometers, preferably maintaining speeds between 60-100 km/h with variations. The focus should be on controlling RPM - it's advisable not to exceed 3,000 rpm, and avoid flooring the accelerator in automatic transmission vehicles. Actually, many modern cars undergo cold break-in at the factory, but components like transmission gears still need personal break-in. It's important to avoid prolonged high-speed cruising and practice more gear-shifting operations in urban driving. Additionally, brake pads require about 300 km of break-in, so refrain from racing during the first few weeks. It's best to change the engine oil at 1,500 km to flush out any metal particles generated during break-in.

When I first got my new car, the 4S dealership told me to drive gently for the first 2,000 kilometers. In the city, keep speeds below 60 km/h, and on highways, stay under 100 km/h—absolutely no speeding. Try to keep the engine RPM below 3,000, especially during cold starts. The worst scenarios are fully loaded uphill driving or towing, as these can damage the engine. A friend taught me a trick: vary your driving speed daily—drive 80 km/h one day and 90 km/h the next, avoiding constant highway cruise control. Also, remember to get the first maintenance service around 1,500 kilometers to replace the initial oil, which may contain metal shavings. A new car is like new shoes—it takes some time to break in.


