Engine:1512c using Front-mounted Tata-Cummins (Cummins 6BT 5.9L), turbocharged, intercooled. 1510 used TATA's own 697 series engine which is a follower of old TATA - Mercedes Benz Engine.
The engines in question are both based on the same underlying design, with the 1512c being a more modern iteration of the 1510 engine. The 1510 is a derivative of a previous TATA-Mercedes Benz engine design.