"It has become imperative for the company to pass on some impact of the ... additional cost to customers through a price increase across various models in January 2019," the company said in a statement https://www.bseindia.com/xml-data/corpfiling/AttachLive/9a0f8ccc-f392-4523-ac04-cf74d0d48db1.pdf.

The price increase will vary for different models, the company said.