2013 Chevrolet Volt Owner Manual - Page 120

5-14 Instruments and Controls Battery Gauge (High Voltage) Fuel Gauge Driver Efficiency Gauge This indicator displays the high voltage battery charge level. When this indicator is displayed in the foreground, the vehicle is operating in Electric Mode. The number next to the indicator displays an estimate of how far the vehicle can be driven while in this mode. See Electric Mode on page 9‑21. This indicator displays the fuel level. When this indicator is in the foreground, the vehicle is operating in Extended Range Mode. The number next to the indicator displays an estimate of how far the vehicle can be driven while in this mode. See Extended Range Mode on page 9‑22. This gauge is a guide to driving in an efficient manner by keeping the ball green and in the center of the gauge. The leaves stop spinning when the vehicle stops or when the ball travels away from the center of the gauge. See Driving for Better Energy Efficiency on page 9‑2. accel: If the ball turns yellow and travels above the center of the gauge, acceleration is too aggressive to optimize efficiency.