HBR Layout A.M. Motors
I recently found this newly opened service center in HBR Layout near BDA complex. The owner (Ph: 9060872583) was working with Tata Motors for about 12 years and the people who work there are also from Tata/Maruti service centers. They worked on my safari's front suspension. So far so good, car feels like new.
They also source original Tata parts if you ask them to. They seem to be pretty knowledgeable, and labor charge is not high. They also have a water service center.