Reporting on my Kia Picanto 1.1:
RON95 - Full tank = 35L
Distance per tank ~ 420-440km
TWO driving profiles 
My dad only accelerates to about 2,500rpm before he'll change
up. Highway to normal roads ratio is about 50:50. Cruising in fifth
is about 2,800rpm at 90-95kmh. Mostly with 3 passengers aboard and
aircon is 100% of the time switched on. Tyre pressure at 240kpa
checked monthly by me.
My driving style is holding until about 3,500-4000rpm before
changing up. But I usually drive alone and highway to normal roads
ratio is about 40:60. Aircon is on 70% of the time. Cruise at about
110kmh at around 3,100-3,200rpm.
Our FC is 13.11-13.15km/l. Which seems good in isolation, but
when you factor in the fact that our engine is only 1.1-litres,
seems quite bad huh? 
smaller engine do not equal to better fc.
think your father driving style is more saving. but your is
about the same since you drive alone (compare to 3 pax for your
dad's)
13 liter /km ++ is ok i believe, anyway, we are talking about
DOHC engine for your picanto? yes?
my fren old lancer SOHC with cvt....about 10km/l.
amazing?
