Seats produce a springy sound from time to time.
Car is excellent on pickup thanks to its fuel injection engine and good suspension.
I have had the Santro EXEC GV for the past 10 months and so far I have witnessed no problems. I was annoyed by a minor sound coming from the rear seats (which I thought came from the shocks!!!), but I got that fixed as well.
Other than that the car is excellent in every way. I do not understand why they couldn't make all four doors with power windows instead of the front ones only.