Dodge 2016 Dart Owner's Manual page 350

348 UNDERSTANDING YOUR INSTRUMENT PANEL
Fuel Economy Analog Display Fuel Economy Digital Display
The DID has the capability of displaying an interactive
flower through the Fuel Economy sub-menu which will
add one flower petal for every 2.5 Miles Per Gallon
(MPG) (1.06 km per liter (km/l) increment. Once the
vehicle reached 30 MPG the DID will display a full
flower.