New Delhi/Mumbai, Nov. 12 -- More than a quarter of a century after the late Ratan Tata first hinted at Tata Motors splitting its operations into two companies, one making cars and the other trucks and buses, the automaker has finally consummated the demerger.

Tata Motors Ltd, formerly known as Tata Motors Commercial Vehicles, shares started trading on the exchanges on Wednesday after the trucks and bus business was demerged from Tata Motors Passenger Vehicles Ltd, which now houses the car business including British unit Jaguar Land Rover.

The shares of the commercial vehicle business, which will also house the recently acquired Iveco business, started trading Wednesday at a 28% premium to the discovered price at Rs.335 each.The passeng...