how to rev a automatic car

[StParker]

Yes, you can rev an automatic car, but it requires a specific procedure since you can't operate a clutch. The most common and safest method is to shift the gear selector into Neutral (N) while your foot is firmly on the brake. Once in Neutral, pressing the accelerator will rev the engine without making the car move. This is because the transmission is disengaged from the wheels. The primary purpose is to warm up the engine quickly in very cold weather or to check engine sound for potential issues.

It's crucial to understand the mechanics. In an automatic transmission, a torque converter manages the connection between the engine and wheels. When in Park (P), a physical pin (the parking pawl) locks the transmission, and revving is generally discouraged as it creates unnecessary stress on this component. Revving in Neutral is safer but should still be done sparingly and without holding the engine at extremely high RPMs (Revolutions Per Minute) for prolonged periods.

Modern engines with fuel injection don't require revving to warm up; idling is sufficient. Excessive revving, especially when the engine is cold, can cause premature wear on internal components as oil hasn't fully circulated. If you're checking the engine, brief revs are fine. For performance situations like a rolling start, some drivers use a technique called "brake torquing," where you hold the brake and accelerator simultaneously to build RPM before launch, but this generates significant heat and stress on the transmission and should be left for controlled environments, not daily driving.

Method	Gear Selector Position	When to Use	Key Consideration
Standard Revving	Neutral (N)	Engine warm-up, sound check	Safest method; always keep foot on brake.
Park Revving	Park (P)	Not recommended	Puts stress on the parking pawl; avoid.
Brake Torquing	Drive (D) or Sport (S)	Performance launches	Creates high transmission heat; not for frequent use.
Manual Mode	Manual/Sequential Mode	Controlling gear for engine braking	Allows higher RPM hold before upshift.

[MacEvan]

Just put the car in Neutral. Foot hard on the brake, slide the shifter to "N," and then you can press the gas. The engine will roar but you won't go anywhere. It's that simple. I do it sometimes just to hear the engine after an oil change. But don't overdo it—it's not great for the car to sit there screaming for no reason. A quick blip is fine.

[HadleyLee]

From a mechanical standpoint, revving in an automatic is about managing the torque converter. In Park or Neutral, the impeller spins the transmission fluid without fully engaging the turbine connected to the wheels. This allows the engine RPM to climb freely. The key difference is that Park uses a physical lock, which can be jarred by high force, whereas Neutral is a purely hydraulic disconnection, making it the technically superior choice for this action.

[Karen]

Honestly, I'd advise against making a habit of it. Modern cars are designed to be driven, not revved stationary. You're burning gas, creating noise, and adding wear for minimal benefit. If you need to warm the cabin, just drive gently. The engine warms up faster under light load than it does idling or being revved. It's one of those things that seems fun but can lead to expensive repairs if you get carried away. Safety first, always.

[McLukas]

My dad taught me to do this on really icy mornings back in the day with our old station wagon. You'd sit there, shifter in Neutral, and give it a few steady revs to get the heat flowing before the long drive to school. It felt like a ritual. With my new SUV, I never need to; it just works. But the knowledge is still there. It's less about the mechanics and more about that feeling of having a little control over the machine.