I purchased tvs centra bike in 2003 , till 6 years from the purchased date I had not paid single penny in maintenance.
Also uptil now i.e 29th May 2017 , I beared least maintenance cost on these bike.
At the time of purchased , average was excellent, and you will be shocked to hear that , still it gives me an average of more than 60
I conclude my review by stating that bike is excellent, worth riding , less investment more benifit, quality bike.