Dont buy a 1.0 liter vitz. U will regret it.
1.3 is a much better option but i have rarely seen it in the newer models.
Look for a passo instead. No knocking and vibration. Great pick and decent economy.
Vitz has better interior, better brakes, better stability, better grip and a better shape but 1.0 engine knocking and vibration will make u hate the drive.
Honest opinion. Rest is ur choice.