At the push of a button, the driver can get a read-out on the amount of fuel in the tank, and the number of miles he can expect to go (at current speed) before a refill is necessary.

• 司机只需按下一个按钮，即可从表上看出油箱中的现存油量及在有必要重新加油前他的汽车所能行驶(以当时的行速)的里程数。