I am also looking to buy one 660 cc vehicle, but a mini off-roader. Can't justify paying at the minimum 16 lacs for Honda Insight to get 16 km/l or up to 24 lacs to get 24 km/l from a third generation Prius.
Have to get this sort of mileage on the cheap. So far I have understood that for 660 cc cars to perform and give excellent mileage they must be with a MANUAL transmission instead of an auto gearbox. Secondly, you must not over rev the car and change gears at low rpms to get the desired mileage.
I am hoping there is one out there which can do 20 km/l, and I will be more than happy with it.
Any such mini SUVS in 660 cc category with manual transmission out there?