Q. The oil chamber of Renault kwid is made of plastic does it break down while off-roading (like terror roads) or not. If yes than what is the solution for it..

Never of this oil sump guard. You'll either get a fiberglass one which will hardly be of any protection. There's a iron one which is even more dangerous - when it's hit by a bolder, the iron guard will not break and the energy transfer from the bolts to the radiator frame and bends / breaks it. It may cause radiator damage also. If that risk is acceptable then only install it.

Yeah it will definitely breakdown while off roading and it will affect the oil chamber due to its plastic body.... Still you go for off road with renault KWID then go for chamber guard which will cost you extra from dealers end...

That could be an issue in case of off-roading though high ground clearance makes the things less risky. You can go for the chamber guard available at the dealerships for an extra cost.