the 3 drive mode can let u choice which mode u wish to use while driving.
like if i at the city drive on a bad jam situation then i will use the eco mode.
if i at the kesas or nkve highway or sepang highway then will use the sport mode .
from my record the sport mode FC will be the f=same as my old original setting FC
eco mode will safe more in the city drive . the respond for the eco mode will be a bit slow but when u at the city drive and traffic jam everywhere then eco mode will be good.
now driving sport mode 5 FC is tank rm 70-75 = 500-550km