Is there a running-in period for cars now? How long does it take to drive through the running-in period?

Many car owners think that new cars have a running-in period. In fact, there is no running-in period for current vehicles. The vehicle has been supercooled and run-in before leaving the factory, and the vehicle parts have been processed, and it has been in a "running-in" state when it is delivered to users. The running-in period is actually the saying of the preceding car. In the past, the automobile manufacturing process was not perfect and the precision was not high, which led to many uneven burrs between parts, which led to the increase of engine running resistance and greatly reduced the efficiency of the engine. Therefore, the new car needs a certain running-in, so that the "cooperation" between parts is more tacit. However, with the development of technology, there is no running-in period for vehicles, and even manufacturers write new cars in the driving manual without running-in period. However, no running-in period does not mean that you can drive violently. In the early stage of the new car, you also need to go into battle lightly. Simply put, it is to drive at a constant speed, lightly step on the accelerator and lightly step on the brakes. Some car owners also said that the new car can't run at high speed and is not rigorous. For vehicles, high-speed driving is more about removing carbon deposits, which is not needed for new cars. You don't have to drive at a high speed deliberately, just drive normally. Even if there is no running-in period, vehicles with 500- 1000km should be as gentle as possible. For a simple example, some car departments will indicate how to run in new cars in the instructions, so as to avoid car damage to a greater extent. In short, as long as the new car runs normally, there is no need to consider the running-in period or how the engine runs in. It is more about the driving habits of car owners, because many car owners like to suddenly accelerate the brakes, even if they don't open, it will have an impact.