Hello my friends. Back from a long time ,3 years away. Again with my 6 year old car now. I have read with STAR and this model shows "TAXI".Do not know what does the previous owner used it for. This is an Avantgarde model . Now I want to know what is the difference between TAXI model and normal model of W211? Does it have any diff in ECU ,brakes ,electronic components ,..ect? Thanks in advance.