Does High RPM in Low Gear Damage the Car?

[OGenevieve]

High RPM in low gear can severely damage the car, leading to wasted gasoline, engine damage, and excessive carbon buildup. Wasted Gasoline: The biggest impact of driving at high speed in low gear is increased fuel consumption. When driving in low gear, the faster the speed, the higher the engine RPM, resulting in relatively higher fuel consumption. The increase in fuel consumption varies depending on the vehicle model and gear, but generally, high RPM in low gear can increase fuel consumption by 2 to 3 times, with a difference of up to 12 milliliters compared to normal driving. Engine Damage: Failing to fully utilize the car's kinetic energy forces the engine to operate at high RPM. Since the gearbox is in low gear, suddenly shifting the car into high RPM operation will cause the engine to be driven by the car's movement, leading to noticeable changes in sound, which is not advisable during operation. Excessive Carbon Buildup: Long-term high RPM in low gear can cause significant carbon buildup due to incomplete fuel combustion and poor oil sealing under high temperatures. These conditions contribute to carbon deposits. When carbon buildup reaches a certain level, it can lead to difficulties in starting the vehicle, increased fuel consumption, reduced engine power, and sluggish acceleration.