Petrol prices in various cities of Tamil Nadu, including Chennai, Coimbatore, Madurai, and Thiruvarur, are being reported for July 9, 2026. Diesel prices in the state are also being reported for the same day. However, it appears that prices for July 10, 2026, in Chennai are also available, while prices in other locations outside of Tamil Nadu, such as Delhi, are being reported for gold rates.