i bought my partner kath a 62 plate hybrid jazz in feb 15 and she loves it ,far better than the 13 plate cvt micra she had before, my only issue with the jazz is being able to use it in ev mode,once your in ev mode it doesn't stay in ev mode for long i feel if you blew on the accelerator pedal it would come out of ev mode and back into petrol it is that sensitive,but saying that she only does short round town journeys and the jazz returns around 48 mpg
so mpg wise its great ,and only £10 / year road tax its a win win situation so go and buy one.