Firstly, a grade 20 officer is not given a luxury vehicle. He is given a Toyota Corolla with green number plate. He also has a couple of official cars for official use ONLY but these cars are kept in the office. For his personal use he has ONE car only. So if your friend keeps changing cars regularly then there is something fishy. And yaar many bureaucrats I know have performed Hajj but they are very corrupt people. So just because one has a beard does not necessarily mean he is an honest man and vice versa. I have written all this from my perspective and from what I have seen. But yes, they are given other benefits which reduce their living expenses.