I have a problem of engine nocking from day first of Vechile delivery . They say this is a normal engine noise, but we have compaire with another VDI modle with the staff of ur Dealer .They confirm that there is a problem in my Car, by till day they haven't clear that noise . Pls see History of my Vechile .I have given my vechile 3 to 4 time in a month, but the problem is as it is.