The first "car" from TATA [ the largest industrial house in the country ], a company better known for its dominance in the commerical vehicle segment, the Sierra is a brilliant concept well suited to Indian conditions of driving. This is the first diesel vehicle to be accepted as a personal car without the derogatory connotations associated with diesels. The design though not class leading is quite acceptable. The body is very sturdy and so is the chassis. Durability is the hallmark of this machine. Engine noise is also remarkably well supressed, while cruising in high gear it is difficult to tell what's under the bonnet. Sierra is the first fully indigenous car to come out of an Indian assembly line.