What does Φ mean on the car dashboard?
2 Answers
Φ on the car dashboard represents the average fuel consumption value of motor vehicles, indicating the fuel consumption performance per 100 kilometers traveled. This value can be displayed on the vehicle's dashboard. The fuel consumption per 100 kilometers effectively reflects the fuel usage of the vehicle and can influence the driver's driving habits. The average fuel consumption value is measured under specified conditions, representing the average fuel consumption during vehicle operation. The test is conducted on level roads above Class III, with a test distance exceeding 50km under normal traffic conditions. The vehicle should maintain a constant speed, typically between 60 to 80km per hour. The fuel consumption value is measured after traveling a certain distance.
I've been driving for over a decade. Once during a long-distance trip, I noticed a strange Φ symbol lit up on the dashboard, which made me quite puzzled about its meaning. Later, after consulting an experienced driver, I learned that this is usually a warning sign for low tire pressure, indicating insufficient air in one of the tires. Low tire pressure is no small matter—it increases fuel consumption and costs more money, accelerates tire wear making them prone to wearing out, and can even lead to dangerous blowouts at high speeds. Since that incident, I've developed the habit of immediately finding a safe place to pull over whenever the Φ light comes on, then using a portable tire pressure gauge to check or going to a repair shop to inflate the tires. Regularly checking tire pressure saves fuel and ensures safety. Never ignore this warning—it can be a lifesaver.
