that is a joke. multijet engines are patented they cannot be produced by any tom dick and harry. though fiat sold crdi to bosch previuosly when they got bankrupt. maruthi does is tuning and caliberation on available mjd's , as much similar as tata quadrajets fiat after sales service. i dont know much as they are not my own observation but the manager revealed to me. he meant that, the way of working for car manufacturing and engine manufacturing are surprisingly diametrically opposite under single hood called fiat.