If I were to buy a used car, I wouldn't buy a car older than 2 years, which means it has to be an 09 model or newer. Sadly with 700k budget it would be hard to find a larger SUV (Everest, Montero, Altera, Fortuner and etc.) for that price. There is too much risk in buying older used cars, since majority of the major parts start to deteriorate at this time, which could end up costing you much more to maintain. If you want a bigger car and has roughly a 700k budget you can also try considering getting a pick-up truck. A 2 year old top of the line 4x2 or a brand new base model should be in the 700k range. Though they are diesel powered vehicles, they are not as fuel efficient as those smaller sedans. Our older Gen 1 everest averages around 5.5 km/L while my newer Ranger averages 10.5 km/L.