Cars usually mature in several generations.

In fact, the statement of automobile replacement is very vague, and there seems to be no unified statement. Generally speaking, it is a small change every year, a big change every two years and a change every five years, but it is not very accurate.

Usually it will be replaced every five to six years. At this time, the overall shape, interior style and traditional system may have great changes, such as updated configuration and introduction of updated engine gearbox. It can also be used to re-condition the chassis, which is a comprehensive update. However, it should be noted that this update often does not involve changes in the platform, that is to say, the chassis structure or even the body structure may not be greatly adjusted, and the two generations of models are only different in form and significance. A typical example is that this generation of CR-V is actually no different from the previous generation, and there is no substantial difference between this generation of Camry and the previous generation of Camry. This is because if the platform-level update is carried out five years later, the cost of car companies will not be recovered.

Real big changes often take eight to ten years, and this time limit is basically universal for all car companies. At this time, it may involve the change of the whole platform end, thus completely changing the suspension form and chassis adjustment, and switching to a more competitive transmission system. The example here is that this generation of nature is equivalent to a big generation. Nissan has unified the Teana model in the global market, which has strengthened the handling, which is very different from the previous 03 and 08 Teana models.