What is the appropriate speed for a new car on the highway?

[Eloise]

It is best not to exceed 3000 RPM, and the speed should not exceed 90 kilometers per hour. Below is the relevant information: 1. If the car is in the break-in period, high-speed driving, long-distance driving, and full-load driving should be avoided. The engine speed should not be too high, preferably not exceeding 3000 RPM. The speed should not exceed 90 kilometers per hour, and sudden acceleration or braking should be avoided. Try to maintain a constant speed. 2. The break-in period of a car refers to the initial driving phase of a new car or after a major overhaul, usually 1000~1500 kilometers. This is the basic mileage required to ensure that the components fully contact, friction, adapt, and settle. During this period, the ability of various parts of the car to adapt to the environment can be adjusted and improved, and the protrusions on the parts can be worn down. The quality of the break-in will have a significant impact on the car's lifespan, safety, and fuel efficiency.