I bought a civic 2003 UG prosmetic from Karachi (now in Islamabad) a few months back. I don't think there are much issues if you have the right documents. I got stopped 3 times (not because of any violation of traffic rules , but I saw them looking at my number plate ) twice they just let me go without asking anything (may be because i always travel with the family ) got stopped once when going out of city (didn't had my original document just photocopies. the guy was a bit of a crack head saying no he needs original and i got illegal tints (i don't have any tinted windows), my elder cousin who is in a ministry steeped in and then he just said to keep original book when leaving city and let me go. ) .
About the average the car gives around 8 - 8.5KM .
For verification of the document or owners you can also use the following link ( it takes a while to update change of ownership, in my case it took almost 3 months. )
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