no fuss buddy. I was the first to get a new voxy in sri lanka.(KY-0xxx) Earlier my vehicle did same as yours. but with time i learnt to master its driving. in town i'm doing around 18km/l and on highway 25km/l. drive more in eco mode together with ev mode. try to charge your battery as more as you can. Decelerate slowly, it increase battery a lot. when go downhill, change your gear to "B" and push the brake slightly. Have to mention this is not a vehicle for "hot pursuit" it is a economical town vehicle so drive slowly as possible