Actually sir there are two things, one is engine capacity and the other is year of registration, my HJ60 is 3980cc, 6 cyl, but it got regd back in 1992, token tax reduces after 10 years of registration and decreases further after 20 years. That's why we face this problem for army auctioned vehicles being regd newly and have to pay much secondly, Islamabad token is way less as compared to Punjab.