The tachometer shows engine speed in revolutions per minute (rpm).

For automatic transmission vehicle's, under wide open throttle acceleration, when the accelerator pedal is pushed flat to the floor, it is possible that the tachometer needle may briefly enter the lower end of the tachometer's red zone just prior to automatically upshifting into a higher gear. This is normal during wide open throttle acceleration and will not harm the engine.

Notice: If the engine is operated while the tachometer is in the shaded warning area, the vehicle could be damaged, and the damages would not be covered by the vehicle warranty. Do not operate the engine with the tachometer in the shaded warning area.