Maruthi - they only claim to be the best

I drive a Maruthi WagonR. It is a good car and there is no doubts about it. After the car had gotten back from service( authorized serivce dealer), i could see a slight difference in the performance of the car. I am talking about negative perforance over here. I got the car checked by a local mechanic and he claims that the engine has been tampered with and the many parts seemed to have been changed to older parts. I gained support from consumerdaddy and they helped me to fix this problem and also gain good compensation. It is about time that consumers stand up for themselves.