Nifty Auto index surges as major automakers report higher August sales, except SML Isuzu facing a decline.

• Tata Motors, TVS Motor, Bajaj Auto, and Eicher Motors rally strongly, supported by rising sales across vehicle segments.
• Eicher Motors posts strong 55% Royal Enfield sales surge, alongside steady growth in its Volvo trucks joint venture.
• Farm equipment maker VST Tillers rises, but SML Isuzu falls on weaker August sales performance compared to peers.