heres the thing....if u plan to run the car on CNG then the city is a better option
on the other hand if u can spend a lil more every month then ur cng bill...the vitz will provide u the best value for money....n NO its not sluggish..the thing is most of the imported ones here have clogged fuel filters (costs about 3000) or clogged CAT (get it broken)...get these two changed and then see its performance....n yes the new vitz doesnt run on CNG..i mean it CAN but the gear box(costs 40 thousand) wont last more then 6 months so better just run it on petrol.
all in all i rather got the vitz...why? simple answer
duel airbags (iv been saved once in a bad crash so i respect the airbag a lot....it only gets used once but then u only live once too)
EBD (electronic brake force distribution)...press full brakes in any weather n in any turning situation even...u will get an unbelievable response from ur brakes...just make sure u are able to avoid guy on ur back from ramming into u.
SEAT comfort....seats in the new vitz...u get that kinda comfort only in the new shape civic n premio n above...rest nothing can match it...not even a corolla X or G.