Does driving a new car at 120 km/h on the highway affect the car?

[CatherineFitz]

Driving a new car at 120 km/h on the highway does affect the car because new cars are not supposed to reach 120 km/h on the highway during the break-in period. Below are some precautions during the break-in period for new cars: 1. Driving speed: Although new cars have undergone initial break-in at the factory, the surfaces of the parts are still relatively rough. During the break-in period, it is essential to control the driving speed and avoid high speeds. The recommended speed is between 50~80 km/h. 2. Throttle: Avoid pressing the accelerator too hard in a new car to ensure that components like pistons, cylinders, and other important parts increase their load gently. This allows the parts to fully contact, rub, adapt, and settle, improving their ability to adjust to the environment and smoothing out any rough edges on the components. The quality of the break-in process significantly impacts the car's lifespan, safety, and fuel efficiency.