Sir stiff suspension is there for a reason. Try driving a corolla 1.3L. The car gives up after 150kmh. Sharp turns to door ki baat brake he nai lagti. I have touched 180 on my city and it doesn't feel much different than civic.
Swift bhi more or less stable he hai but other things suck. Headlight visibility sucks, braking at speeds is pathetic ABS doesn't keep the vehicle in pace properly, interior is small for a car worth 13 lakhs and paint quality isn't close to good.