Car upgrading can bring many benefits. First of all, replacement can reduce the cost of buying a car, because the value of the old car can be used to deduct the price of the new car. Secondly, replacement can save the trading link of used cars and reduce the consumption of time and energy. In addition, the replacement can also enjoy the warranty and after-sales service of the new car, which improves the reliability and safety of the vehicle. Finally, replacement can update the vehicle in time and enjoy the technology and comfort of the new car. Therefore, car replacement is a cost-effective choice.