Nissan Motors — Nissan Terrano 110 engine failure issue

Nissan Terrano 110
Vehicle number: KL-08 BG 456

We delivered our NIssan Terrano on 2014 from EVM kalamassery Ernakulam, kerala. My parents we using this car for last 7 years without any accidents and it's driven only 30000 Kilometers.
Yesterday, we came to know from the Nissan dealership that injector of the engine was not working and has to be replaced, The compression fails due to this issue.

How can an engine failure happen for a 30K kilometers driven car? It's not acceptable and i am looking for a free replacement for the nozzle. The vehicle is in the 'Pinnacle Nissan' dealer ship in thrissur, Kerala.
Hope this issue will be addressed/compensated from the factory level. We don't have any other choice other than filing a law suit against Nissan vehicles for the engine failures.

Thanks,
[protected]@yahoo.com
thrissur, Kerala, India.