Finally signed the deal ........

Guys I bought her at the year end ...... Beautiful machine ..... Shifting from my dad's bs3 Glamour which ive been riding since i was around 14-15 maybe .... now im in college so bought it mostly for college commute purposes as my dad goes to office on the glamour ...... Well my only concern is its straight up not giving the mileage its supposed to ..... like its not bad but 45ish is a large difference from claimed 66kmpl(tho its before 1st service) and a few tips to maintain it cause i never have done maintainence stuff .....