The problem is, if you consider a much more luxury car like Benz or Lexus. Singapore's price is 100% or 200% higher than the price in Germany or Japan.
Everybody knows that luxury cars will be charged with higher import tax than compact/economy cars, right?
But local trader defines the price of a 0.8L Chery QQ(the most low priced model of QQ) 400% more than the price in China. How much is the import tax submitted to government to benefit the whole society and how much is the benefit excluded to trader?
If u've got 4 peeps with an average weight of 90kg, it might be a little problem. Highways here are a little different than that of Australia, extremely short in comparison. So I guess it would be economical and more friendly in this part of the world.