The present Customs rules allow the import of a car not older than three years. The Customs Duty would be calculated based on the year of manufacture of the car. For example: in case of Mercedes Benz E200 1800 cc Model 2014 the Customs Duty would be in excess of Rs. 2.1 Million. The Customs Duty on newer models would be high around Rs. 3.1 Million for Model 2017. In addition to this you will incur the freight charges from Germany to Pakistan plus the custom clearing agent caharges, etc. Also take into consideration that if it's a German model than it would be a left hand drive vehicle.