Is it normal to run at 120 km/h with an engine speed of 3500 RPM?
3 Answers
Running at 120 km/h with an engine speed of 3500 RPM is a normal phenomenon. An engine speed of 3000 RPM at 120 km/h is within the normal range, with higher speeds reaching 4000 RPM and lower speeds around 2000 RPM. The engine speed varies depending on the vehicle model and is not fixed for every car. Relevant information about engine speed is as follows: 1. Introduction: Rotational speed (Rotational-Speed or Rev) refers to the number of revolutions an object makes around a circle per unit time (different from frequency). Common types of rotational speed include rated speed and maximum speed. 2. Hard disk rotational speed: Hard disk rotational speed is expressed in revolutions per minute, with the unit denoted as RPM, which stands for Revolutions Per minute. The higher the RPM value, the faster the internal transfer rate, the shorter the access time, and the better the overall performance of the hard disk.
I've driven many cars, and whether 3500 RPM at 120 km/h is normal depends on the type of vehicle. For a manual transmission older car or a small-displacement economy car, like a manual Jetta or Fit, this RPM isn’t unusual—they have fewer gear ratios and are designed to operate efficiently at higher RPMs. However, for an automatic transmission newer car or a luxury vehicle, 3500 RPM is on the high side; normally, it should be between 2000-3000 RPM. Higher RPMs increase fuel consumption, engine noise, and wear, especially noticeable during long-distance driving. I recommend checking if the tire pressure is correct and ensuring the drivetrain is running smoothly. Regular oil changes and transmission fluid maintenance can help the engine run more smoothly. If you're unsure, take the car to a professional repair shop for a check-up—safety comes first, and minor issues shouldn’t be ignored.
As a driver who frequently takes long-distance trips, I believe that 3500 RPM at 120 km/h should be considered in context. Some SUVs or manual transmission models, like the Haval H6 manual version, may reach 3500 RPM on the highway, which depends on the engine and transmission matching—this is normal. However, for automatic transmission cars like the Toyota Corolla, excessively high RPM may indicate delayed upshifts or clutch issues. This wastes fuel, increases engine strain, and affects driving comfort. A quick self-check is recommended: observe whether the car shifts smoothly during acceleration and whether tire wear is even. Regular maintenance of the air filter and brake system can help prevent abnormalities. If high RPM persists, promptly visit a reliable repair shop for inspection to prevent potential hazards from escalating—driving safety is paramount.
