What is the appropriate engine speed for high-speed driving?

[StDylan]

When driving at high speeds, it is appropriate to keep the engine speed between 2000 and 3500 RPM. Precautions for high-speed driving include: 1. Quickly accelerate to a certain speed when entering the main lane from the ramp; 2. Do not obstruct vehicles already driving in the main lane when merging; 3. Always pay attention to roadside and road signs and markings, and drive appropriately to the right; 4. Maintain a safe longitudinal distance between vehicles; 5. When overtaking, use the left turn signal and honk the horn, passing the vehicle ahead from the overtaking lane; 6. In case of an emergency requiring a stop, quickly signal to the right, slow down and stop in the emergency lane, turn on the hazard lights, and place a warning sign behind the vehicle; 7. Distinguish lane functions and drive in the appropriate lane.

[OLouis]

As a veteran driver with over 20 years of experience, I've driven various models on highways and found that maintaining engine speed between 2000 to 3000 RPM is optimal. If it's too high, say over 3500 RPM, fuel consumption noticeably increases, and engine noise becomes louder. If it's too low, below 1900 RPM, the car feels sluggish, and prolonged driving in this range may damage transmission components. My daily practice is to keep the RPM around 2500 when cruising at about 100 km/h, which ensures fuel efficiency and smooth driving. With manual transmission cars, I shift gears based on speed to keep the RPM in the optimal range; automatic transmission cars adjust automatically. Additionally, vehicle weight and wind resistance affect this value—SUVs, for instance, require slightly higher RPM. The key is to monitor the tachometer and avoid large fluctuations, which benefits both engine longevity and fuel economy.

[Rosemary]

As an automotive technology enthusiast, I have extensively researched engine performance and believe that maintaining an engine speed between 2000 to 3500 RPM during high-speed driving is the optimal range. Too low, such as 1800 RPM, may cause lugging issues and increase wear; too high, reaching 4000 RPM, would waste energy and reduce fuel efficiency. Automatic transmission vehicles rely on ECU intelligent control and typically stabilize around 2500 RPM; manual transmission vehicles require the driver to shift gears manually to match the gear and speed. When I drive at 100-120 kilometers per hour on the highway, I aim for a target RPM of around 2800, which is based on the engine's design efficiency point. Other factors must also be considered, such as road gradient and vehicle load—maintaining moderate speed on flat roads and slightly increasing RPM when going uphill. This habit helps protect the engine and prolongs the lifespan of its components.

[LeviAnn]

As an average office worker who commutes daily on highways, experience tells me that an engine speed between 2000 and 3000 RPM is most ideal. When driving my automatic transmission car at 110 km/h with the RPM around 2600, it feels balanced and comfortable with reasonable fuel consumption. Lower RPM makes the car lack power, while higher RPM introduces noise that interferes with driving. I believe this range is both safe and practical, requiring no complex considerations.

[DallasLynn]

As a family driver, I often take my kids on trips. On the highway, I keep an eye on the engine RPM not exceeding 3000, otherwise the engine noise becomes too loud. I recommend maintaining between 2000 to 2800 RPM – at 100 km/h, 2500 RPM provides a smooth and fuel-efficient ride. Too low RPM might lead to unresponsiveness, affecting safety. The automatic transmission helps manage it, but I still focus on smooth operation. When carrying heavy loads, slightly higher RPM is needed to ensure sufficient power.