What is the RPM at 80 mph?

[VanEvelyn]

At 80 mph, the RPM is around 2,000 per minute, at which point the car will shift into a higher gear. Some car engines may even run below 2,000 RPM. During high-speed cruising, it is advisable to use a higher gear, as this reduces the engine RPM and improves fuel efficiency. If a lower gear is used during high-speed cruising, the engine RPM will be too high, leading to increased fuel consumption. When overtaking, it is necessary to downshift in advance to increase the engine RPM and enhance wheel torque, allowing for quicker acceleration. When driving a manual transmission car, the gear must match the engine RPM and driving speed to ensure optimal fuel efficiency.