Why Does a New Car Accelerate Slowly During the Break-in Period?

[LeonardoMarie]

Driving slowly during the break-in period of a new car is beneficial for the engine, as the mechanical components need time to wear in properly. Frequently revving the engine or accelerating aggressively during this period can cause damage. However, driving too slowly all the time can also lead to carbon buildup in the fuel injectors, which may reduce the engine's effective power. Key considerations during the break-in period of a new car include: Warm up the car before starting: Wait 5 to 10 seconds after shifting into second gear before driving; Avoid high-speed driving: New cars have speed limits during the break-in period—domestic cars should stay between 40 to 70 km/h, while imported cars should not exceed 100 km/h; Avoid overloading: Carrying excessive weight during the break-in period can damage mechanical components.