Douglas Dragonfly

Dear All, I’m new to Sri Lankan roads. In my thinking best means reliability, dependability, comfort and performance. Looking to buy a such ride for me around 4M. I know I can’t go for a new one matching these criteria with my budget. So I’m fine with an old car. Following are my concerns. - I have 3kids in the family so the car has to be bigger or it has to be a SUV - I don't have much time to hang in the workshops, So I expect a vehicle not fragile with less frequent repairs. - Parts must be available; it doesn't have to be in every shop here and there. but at-least in couple of shops in the country (doesn’t has to be so cheap, but available) -Availability of reliable workshops; I can’t afford IWS or D*MO; but it doesn't has to be cheaper like a normal garage - Having a fuel efficiency of at-least 6km per liter - I don't care about the registered number -having some resale capability (at-least within 4 months) What I understand from studying a bit, different models of the same car have huge gaps in reliability and market price in Sri Lankan roads. As an example W211 E200 Komp has more market value that E240. Highly appreciate if you can guild me and suggest few options/models. Country of manufacturer doesn't matter.