I beg to differ with your statement. I have, till now, wonderful experience with Tata services, better than what i had with Maruti. I am not saying that tata is better than maruti, but to say Tata is so bad, is not correct.
Even with so bad A.S.S reputation, if tata is just behind maruti and hyundai, i would wonder what they would do if they improve the perception and process of their services. Manza is nice and excellent VFM and i am sure Dzire will feel the heat. Dzire doesn't stand anywhere, except it is from maruti.