What are the hazards of using engine braking?
2 Answers
Engine braking hazards are that the frequency of traffic accidents on continuous downhill slopes is higher than on other roads. The following is relevant information about engine braking: 1. Damage: No damage to the machine. Frequent use can damage the transmission, as engine braking relies on downshifting, which puts the most stress on the transmission. It is best to slow down first and then downshift. Using engine braking on long downhill distances can effectively reduce brake heat fade. 2. Definition: Engine braking refers to lifting the throttle pedal without depressing the clutch, using the compression resistance, internal friction, and intake/exhaust resistance generated by the engine's compression stroke to create a braking effect on the drive wheels.
As a veteran driver with over 30 years of experience, I believe that using engine braking properly can indeed save brake pads, especially when going down long slopes. However, there are also many hazards. The biggest issue is that long-term use can increase the engine's burden. For example, if you frequently downshift to decelerate, the engine RPM will surge, accelerating wear on internal components like pistons and valves—older cars are particularly prone to malfunctions. The transmission is another concern: frequent gear changes in manual transmissions can damage synchronizers, while automatic transmissions may overheat or experience logic confusion. Safety-wise, using engine braking on slippery roads can cause wheel skidding, especially in rear-wheel-drive vehicles, which can be dangerous if not controlled properly. I recommend not relying on it too frequently, especially at high speeds. If you really need to slow down, prioritize using the brake system—it's also easier to maintain. Regularly checking engine oil and coolant can extend engine life and mitigate the negative effects of this driving style.
