• Financial performance: Motherson Sumi Wiring reported record quarterly revenues of 3,335 crore rupees in Q4, up approximately 33% year-on-year, while full-year sales grew 23% from 9,320 crore to 11,478 crore rupees.
• Revenue growth drivers: Outperformance relative to the broader market was driven by double-digit volume growth, higher wiring harness content from feature-rich models, commodity price effects, and securing business in new OEM model launches.
• Copper price pass-through: Management noted that contractual mechanisms allow input cost increases to be passed on to customers quarterly or semi-annually, with Q4 copper cost impacts expected to be absorbed in Q1.
• Capacity ramp-up: Greenfield facilities are expected to stabilize and ramp up over the next one to two quarters, easing initial startup cost pressures and supporting margin recovery.