What are the gears of an automatic car?

2 Answers
VonCarter
07/29/25 1:26am
Automatic cars have the following gears: 1. P stands for Parking gear, used when the car is parked and not in use. In this gear, the wheels are mechanically locked to prevent rolling; 2. R stands for Reverse gear, used when reversing; 3. N stands for Neutral gear, used for temporary stops (such as at a red light). Note that to prevent the car from rolling on a slope, the brake must be pressed; 4. D stands for Drive gear; 5. 2nd gear is a Low gear, used when starting on a steep slope or a very inclined gradient; 6. L stands for Low gear, used when going downhill or on a long slope. This gear limits the car to only low gears, allowing the engine's power to brake the car downhill, preventing the driver from having to press the brake for a long time, which could overheat the brake pads and cause danger; 7. OD gear stands for Overdrive gear, used for high-speed driving to achieve fuel efficiency.
Was this review help?
10
1
Share
Kent
08/12/25 5:33am
The most common are the basic gears: P for Park, R for Reverse, N for Neutral, and D for Drive. P is used to lock the wheels when parking and turning off the engine to prevent sliding; R is for reversing; N is suitable for short coasting or towing; D, the driving gear, is the most commonly used for moving forward. There are additional gears like S for Sport mode to enhance acceleration, L for Low gear to control speed when climbing hills, and M for Manual mode to freely shift between high and low gears, etc. When starting the car, press the brake to shift from P to D to avoid a sudden start. When parking on a slope, engage P and apply the handbrake for safety. Daily driving can be handled mostly with D gear, but using L or 3rd gear downhill can save brake pads and improve control. Avoid shifting to P or R while moving to prevent transmission damage. Familiarity with the gears leads to smoother and more fuel-efficient driving.
Was this review help?
15
0
Share
Expand All
More Forum Discussions

Can Plug-in Hybrid Vehicles Get Blue License Plates?

Plug-in hybrid vehicles cannot get blue license plates. Blue license plates: Generally exclusive to small vehicles, but not limited to sedans. Passenger vehicles with fewer than 9 seats and commercial trucks with a load capacity of less than 1.5 tons can also use blue plates. Yellow license plates: Vehicles with yellow plates mainly include: large trucks, ordinary M2-class light buses, medium and large buses, agricultural vehicles, trailers, vans with 10 seats or more, and trucks with a load capacity of over 1.0 tons. White license plates: White plates are commonly seen on vehicles of public security departments, judicial departments, procuratorates, as well as armed police and PLA units—national authority institutions. Black license plates: The first type of black plates are Yue Z plates issued by the Guangdong Provincial Public Security Department, mainly facilitating travel between Guangdong and Hong Kong/Macau. Another type is for foreign institutions in China, such as consulates, representing embassy vehicles, which also display the national flag. Green license plates: Introduced in recent years for new energy vehicles, but not all qualify. Pure electric vehicles (PEV), plug-in hybrid electric vehicles (PHEV), and fuel cell electric vehicles (FCEV) can get green plates, while hybrid electric vehicles (HEV) cannot.
2
3
Share

Do I Need to Turn on AC When Using the Air Conditioner?

AC button is the switch for the air conditioning compressor. You must turn on AC when using the air conditioner for cooling; however, activating the heater does not require starting the air conditioning compressor. Function of the compressor: The compressor plays the role of compressing and transporting refrigerant vapor. Compressor lifespan: The lifespan of a car air conditioning compressor is generally around 10 years. The specific time for replacement depends on the quality of the compressor and the frequency of use. After all, compressor quality varies, and the usage frequency of air conditioning compressors differs in different climate regions. Proper maintenance is very important. Maintenance precautions: You should regularly clean the car air conditioner to ensure better operation.
9
1
Share

What is the name of the metal pipe under the engine spark plug?

The metal pipe under the engine spark plug is called the spark plug wire. Function of spark plug wire: The spark plug wire serves as the medium through which the ignition coil transfers energy to the spark plug. When symptoms such as car shaking or jerking occur, it is important to inspect the spark plug wire and replace it if necessary. Composition of spark plug wire: Automotive spark plug wires, generally referring to distributor wires, transmit the high-voltage spark from the distributor to the spark plug, enabling ignition and combustion within the cylinder to drive the engine. Spark plug wires are broadly divided into four parts: first, the conductive material; second, the insulating rubber; third, the ignition coil connector; and fourth, the spark plug connector. Some spark plug wires are also wrapped in a layer of heat-resistant material to prevent them from being burned out.
12
5
Share

Is Polishing and Waxing Necessary for New Cars?

New cars require polishing only when there are numerous scratches. New car maintenance methods: The paint on new cars is very glossy and vibrant, but after driving for a while, the paint on different cars can vary significantly. Generally, new cars do need waxing, which is currently the most common and cheapest way to maintain the car's paint. Dealing with aging paint: If the car's paint has aged severely, the entire vehicle's appearance will look lifeless, turning it into a true "old car." After waxing, it can effectively prevent damage caused by UV rays and corrosive substances such as bird droppings and kitchen fumes to the car's paint.
8
4
Share

Where is the vent hole of the headlight located?

The vent hole of the headlight is located at the lower left position of the steering wheel. Function of the vent tube: Whether it's a regular halogen headlight, xenon headlight, or LED headlight assembly, there is a vent rubber tube on the rear cover. When the headlight is turned on and during use, a large amount of heat is generated. The function of the vent tube is to expel this heat as much as possible outside the headlight to maintain the normal operating temperature of the headlight and ensure its stable performance. Principle of fog expulsion: Moisture in the air can enter the headlight through the vent tube and condense on the lens. As moisture accumulates, water droplets will flow down the lens. This phenomenon mostly occurs due to significant temperature differences and is most common in winter and rainy seasons. After the headlight has been on for a while, the fog will be expelled through the vent tube along with the hot air, which generally does not damage the headlight or electrical circuits.
19
3
Share

What are the reasons for slow acceleration in Cummins engines?

Here are the specific reasons for slow acceleration in Cummins engines: Clutch Slipping: Clutch slipping mainly manifests as the vehicle's speed not increasing with the engine's RPM during acceleration, preventing the engine's power from being fully transmitted to the drive wheels, resulting in weak driving performance, especially noticeable when going uphill. The primary causes of clutch slipping are insufficient friction from the clutch friction plate; shifting gears too early or disengaging before the clutch is fully engaged; prolonged driving with the clutch partially engaged or coasting with the clutch pedal depressed; and abnormal wear of the clutch plate due to aggressive throttle application when the gear is not fully engaged or disengaged. Fuel System Malfunction: Clogged fuel injectors, leaking fuel lines, reduced fuel pump efficiency, or a blocked fuel filter can all lead to weak performance when driving uphill.
3
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.