Well the reason for poor sale might be the price bracket in which the car is sitting right now. Peeps now have alot of options.
Cultus is 4 mill plus and Pica is almost there as well, you can get new Alsvin for that price, lets not go in 2nd hand car market, you have alot of opinions.
Kia Pakistan is just assembling cars, dont think there is an engineering division, the car is selling all over the world with the same engine plus gear box and its doing good overall.
Chassis weight has gone down with each generation with slight tweaks to the engine nothing major.
Fuel comparison you made is pretty useless, its one dimensional. A life style change is in order I would say, everything is getting out hands, high time to make smart decision.
Rather than following in the footsteps of last generation who blindly followed the herd.