500-600k suv, gas or diesel

I am looking to buy a 2nd hand suv/cuv, budget is up to 600k max, 2nd car sya I still have a sedan (civic sir). In that price range mga nakikita ko sa sulit mga crv, tucson, sportage, escape, xtrail, ang pasok sa budget....

So which is better buy.... Criteria

1. Fuel consumption - cost of using
2. Durability/maintenance - cost of maintenance


Alin ba talagamas practical... Diesel or gas engine? If diesel I get the a/t butif gas baka m/t na lag para pataas km/l