exactly what year is this car? what are the specs? can we have some interior pictures? what changes have you done to the car? are you the first owner?
only reason im asking is that it seems to me that the bonnet, indicators, tail lights, bumpers etc have been changed or painted and these hubcaps are most likely from a W140 S-class.
there are many things which you can changed on a W124 to make it look newer, but there are just as many things which people tend to forget when facelifting a car.