mehran is suzuki for which parts are available easily and at very cheap rates even used availability is through the roof , and also Mehran you GET ARE BRAND NEW CARS !! Old cars are bound to have problems due to daily wear and tear and affording one and availing parts for any Mitsubishi is a big problem rest aside expensive.
i don't understand why people compare cultus , coures altos while selling 10+ year old cars driven in Pakistan already.
there is simply no comparison for a new car with anything driven on Pakistani roads. i would take exception if they are fresh imports or recondition than only cars which are actually brought in volume and will have parts availability.
good luck with your deal though. i hope you find a mitsulover and understands what you have to offer here.