9.5km/L is fine by all means. max u can get is 12km/L.
btw, depends greatly upon driving habbits. get ur car tuned, but i fear the way our mechnics do the job, u might end up with lean mixture and in turn complain about engine heating up.
get carb clean though its not required as its only one year old car. clean it by urself,
remove air filter casing, start car, put ur hand on carb, block air entering carb, engine'd tend to stall, u might hear strange noises 
but its normal, uncover the carb. u'd see the residues (black color) sticking to ur hand and on brim of carb. here u go, u successfully cleaned ur carb
P.S. i assume other things are fine, clutch plate, brake shoes, valve clearance etc.
