aiiiiii.......@Jaribu: you have set your own exam and really to answer it -though incorrectly. Pls note that @sacha's problem is vibration when the car is on halt! pls respond to that! This has nothing to do with brakes,bushi,bla bla bla. Other suspension problems and poor oiling,ATF as you indicate can easily be evident if the car is in motion esp on uneven road surface....
Meanwhile,@sasha,you dont to pay a mechanic to have the engine fluids checked. Next time you go to a fuelling station,just open the bonnet and tell the attendant 'niangalilie uko mbele'...then go see what he/she does. They will tell you if there is a problem or if the fluids need topping
Life is worth living cos God planned it to be so.