I exported my Honda Accord 2006 from Saudi to Qatar. I sent it by ship, to avoid bureaucratic hassles. I paid about QR3600 customs duty in Doha. Registration in Qatar is a fairly quick and simple process and doesn't cost much (a couple of hundred riyals). I personally think it was worth it, rather than selling it in Saudi. If I had sold it in Saudi I would probably have lost some 15-20k riyals on the deal.