Perception or expectations of what is backward again is relative. What appears as very advanced to some may have no meaning to others. Iran has suffered greatly from the embargo but there is relatively no shortage of food etc. They manage to patch up and drive the old cars. Life goes on.

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99 Gurkha with OM616 IDI turbo

2015 Gurkha with OM616 DI turbo

2014 Rexton W with OM612 VGT