Figures released by Society of Indian Automobile Manufacturers also say total sales of vehicles across categories registered a growth of 21.63 per cent.
Daimler India Commercial Vehicles, an arm of the world's largest truck maker Daimler, is investing Rs 4,400 crore for a new facility at Oragadam in Tamil Nadu.
The Pune-based company achieved sale of 3,14,515 units on the back of robust performance by its premium bikes Pulsar and Discover 100.
The study finds that price continues to be the most frequently cited reason for vehicle rejection, with nearly one- third of shoppers rejecting a model because the price was too high.
Domestic sales stood at 9,513 units in the reviewed month, against 4,809 units in the same month last year - up 97.82 per cent - a statement from the company said.
Even as the country has managed to emerge as the seventh-largest automobile manufacturer in the world, its share in the global auto exports market is restricted to just one per cent.
Car sales continued to race ahead in September, as Indian auto makers posted double-digit growth for the fourth month in a row, on the back of buoyant demand. Numbers are expected to spurt further.
The car maker, already conducting trials of city buses in Bangalore, said it would launch those manufactured at its Chakan facility in the second half of 2011.
A company statement said the increase would be implemented from October 1 and in the range of Rs 3,000 to Rs 8,000, depending on the model.
In the last part of the series, we rate all the cars in the Rs 6-18 lakh category to help you choose the one that suits your needs.