Try your self
if some one has used these cars get their advises bro..i own an axio HV 165 2015 model now.used a premio also.on premio my average did around 10km/L.axio is better in fuel cz its HV.other things not much different. comfort is also like same.actually new axio handling is superb.second hand market is better in premio.but not sure about 2008 model