O my god, itna masla?
Bro, you can get older model Coure, Cultus & 2005 Santro in this range.
If you have 500k, buy a car worth maximum 450 and keep the rest of the money for maintenance. Don't spend it on a fancy audio system or rim set. I
n 450 you can get a 2004 Alto which is quite reasonable, spares are easily available and cheap. Since you're in ISB its pretty easy to find a nice non rusted car. You can spend the remaining 50k if you encounter problems after driving the car for a couple of months.
All those idiots who are making fun of the budget, "apni age dekho, khud sa aik cycle khareednay ki aukat nahi hay". I will not recommend a mehran because its a pretty $hitty car. Alto & Cultus are ur best choices.