What is the speed for 4th gear?

[MacMia]

Generally, cars use 4th gear at speeds of 40-60 km/h, which means 4th gear can drive at 40-60 mph. Typically, after engaging 1st gear, the vehicle moves forward; shift to 2nd gear by pushing left; shift to 3rd gear by returning to neutral and then pushing forward; shift to 4th gear by returning to neutral and pushing straight forward; shift to 5th gear by pushing right and then up (refer to the vehicle's gear markings for details). Manual gear speed matching and introduction: 1st gear: used for normal starts or climbing very steep slopes, with speeds generally around 10 km/h; 2nd gear: used for low-speed driving or climbing steep slopes, with speeds generally around 20 km/h; 3rd gear: usually used at speeds of 20-40 km/h, commonly used for city driving. 4th gear: used at speeds of 40-60 km/h; 5th gear: used at speeds above 60 km/h; N gear is neutral, used when parking or idling. For example, when waiting at a traffic light, shift to N gear and engage the handbrake; R gear is reverse, used for reversing after the vehicle has come to a stop.

[LaJude]

I often encounter this issue in my daily driving. Many people think that fourth gear has a fixed speed number, but in reality, it completely depends on the situation. For example, with the small car I'm driving now, if the RPM stays around 2000 in fourth gear, the speed is roughly between 60 to 70 kilometers per hour. But if the RPM goes up to 3000, the speed can surge past 100. On the highway, with more wind resistance, the speed might drop a bit, and in city traffic with frequent stops, you'll need to shift gears more often. Remember not to just focus on the gear—the safe range displayed on the speedometer is more important, especially when you need to slow down on rainy days. The timing for shifting gears relies on feel and experience, and there are differences between older and newer cars. It's best to test how the car behaves at different RPMs after getting in, and you'll gradually get used to it. This way, you can avoid distractions while driving.

[OGemma]

After driving for so many years, I understand that the speed in fourth gear can't be given an exact number, as the gear ratio and engine characteristics vary from car to car. Back in my younger days driving a manual transmission car, fourth gear usually operated between 50 to 80 kilometers per hour, depending on how hard you pressed the accelerator and the road's gradient. Uphill, the lack of power causes speed to drop quickly; downhill, it's easy to exceed the speed limit. I suggest not obsessing over specific numbers—the key is learning to listen to the engine sound and watch the tachometer. If the RPM is too low, the engine shakes uncomfortably, and if it's too high, it wastes fuel. Nowadays, with automatic transmissions being popular, the system automatically calculates the appropriate gear, making driving more effortless, but the fundamental skills still need to be practiced.

[DiOlivia]

I just learned to drive recently and am quite interested in this topic. The speed in fourth gear isn't fixed. For example, in my car, 1500 RPM usually corresponds to around 40 km/h, while 3000 RPM can reach 100 km/h. However, newer cars have significant variations in transmission design. It's recommended to use a mobile app or the car's dashboard to monitor speed and RPM in real-time, rather than just memorizing gear numbers. Shifting gears at the right time in a manual transmission can save fuel—just upshift when exceeding 2500 RPM. Safety comes first; always pay attention to speed limit signs on the road. Gears are just tools.

[SanArabella]

As someone with some knowledge of automotive technology, the fourth gear speed depends on the transmission gear ratio and the forward ratio. Simply put, the vehicle speed is directly proportional to the engine speed multiplied by the ratio, but the ratio varies from car to car, so there is no universal answer. For example, sports cars have tighter gear ratios, resulting in higher speeds at the same engine RPM; family cars are more relaxed. Understanding your vehicle's manual can help optimize driving, such as maintaining RPM within a reasonable range to prevent lugging or high-RPM damage. Combining the speedometer to judge current speed and adapting to environmental changes is more practical—don't get too theoretical.

[SanJulia]

I believe driving safety is paramount, and the speed in fourth gear is not a fixed number—paying attention to real-time speed is more crucial. Speed limits in traffic rules serve as the fundamental guideline. When shifting gears, ensure the engine RPM stays within the 1500-3000 range for stability—too low may weaken power and cause malfunctions, while too high significantly increases fuel consumption. Develop the habit of observing road conditions, such as slowing down to lower speed ranges on curves or slippery roads. Long-term neglect can lead to transmission wear, so timely maintenance is essential to preserve vehicle performance and ensure safe, worry-free driving for years to come.