Not At All....!
Dont worry about its Performance, Parts, or Re-sale.
If it was a failure then Why did so many people buy it and you can see countless of them on Roads.
If you are worried about its parts then You can find them at ChahSultan(Rawalpindi) or in ShoobaBazaar(Peshawer).
Prices of not just Vitz but all the cars whether Japanese or Pakistan assembled have decreased alot.
1999/2000 Vitz ---(440,000 to 470,000)
2001/2002 Vitz ---(470,000 to 500,000)
2002/2003 Vitz ---(500,000 to 530,000)
else on Pakwheels CarFinder list...