What are the hazards of revving the engine in neutral?

[SophieRose]

Revving the engine in neutral does not cause significant damage, but it mainly wastes fuel. Typically, each instance of revving in neutral consumes approximately 6 milliliters of fuel. Below is relevant information about revving the engine in neutral: 1. Short-term traffic congestion: During brief traffic jams, it is recommended for manual transmission vehicles to shift into neutral and engage the handbrake; for automatic transmission vehicles, shift into N (neutral) and engage the handbrake. This allows the driver to relax and free up both hands and feet. 2. Other hazards: Prolonged pressing of the clutch and brake pedals can increase leg fatigue. Once numbness sets in, it may lead to stalling or even sudden rear-end collisions with the vehicle ahead.

[DeWalter]

As someone who has been driving for over a decade, I've learned the hard lesson of revving the engine in neutral, and I think it's pretty foolish. Not only does it waste fuel, but the engine revs like crazy, and the increased temperature accelerates cylinder wear, shortening the engine's lifespan in the long run—leading to hefty repair bills. Especially in the summer heat, high RPMs can burn off the oil, causing poor lubrication that damages undercarriage components. What's most annoying is the air pollution it causes, exceeding emission standards and harming the environment; in places with strict environmental regulations, you might even get fined. If it becomes a habit, accidentally shifting into gear while driving can cause the car to lurch forward, damaging the transmission and posing serious safety risks. Wouldn't it be better to save on fuel costs? I suggest being mindful and avoiding revving in neutral—it's responsible for both your car and your wallet.

[StHenry]

I usually enjoy studying car structures, and revving the engine in neutral poses significant risks. The engine speed skyrockets, increasing pressure, which accelerates wear on components like valves and pistons. In older cars, this might even lead to a blown engine. Fuel burns rapidly without doing any useful work, wasting energy and increasing exhaust emissions. Even the battery charging efficiency drops when using the heater in winter. New drivers who develop this habit may make shifting errors—sudden impacts during gear engagement can cause the drivetrain to squeak, damaging the chain or clutch plates. Doing it once or twice might not cause immediate harm, but frequent revving can severely degrade the car's performance, leading to higher maintenance costs that aren't worth it. Simple checks like tire pressure or coolant levels are far better alternatives. It's best to develop good habits to protect your beloved car.

[AllisonMarie]

I care about car fuel economy. Revving the engine in neutral is purely a waste of money and harmful to the vehicle. Not only does fuel consumption skyrocket, but the engine also overheats under high load, causing engine oil to degrade faster and accelerating component wear, leading to unnecessary repair costs. Increased exhaust emissions also pollute the environment, contradicting the concept of green travel. An occasional rev is fine, but doing it frequently can cause harsh gear engagement, strong jerking sensations, and long-term discomfort while driving. Safety-wise, developing this bad habit may lead to misoperation during startup or parking, potentially creating accident risks. With so many fuel-saving techniques available, why waste gasoline unnecessarily? Just pay attention to daily driving habits.

[DiJake]

From a car maintenance perspective, I've tried revving the engine in neutral and found numerous drawbacks. The engine RPM skyrockets, causing excessive wear on the timing chain and spark plugs, shortening component lifespan, and leading to painfully expensive repairs. Fuel is wasted needlessly, resulting in high economic costs and poor environmental scores. If done in traffic, the forceful gear engagement creates strong shocks, increases wheel slippage, and raises accident risks. New drivers might think it's cool, but forming this habit leads to unstable driving, noisy transmission clunks, and overall performance degradation. During maintenance, focus more on checking the battery and tires instead of wasting resources for momentary thrills.