The consumer price index (CPI) for petrol surpassed 100 points in May 2026, marking a historic first in the new series with base year 2024. According to reports from Business Standard, this milestone was driven by the West Asia war, which forced oil marketing companies to implement significant fuel price increases. The petrol price index had remained below 100 points since the new series began, making this development particularly significant for inflation tracking.
The fuel price increases had a substantial impact on retail inflation rates. Petrol's CPI inflation rate climbed to 3.11 per cent in May from sub-1 per cent in earlier months of 2026, as reported by Business Standard. Similarly, diesel's CPI inflation rate jumped to 3.36 per cent in May from below 1 per cent in previous months of 2026. The diesel price index had been slightly over 100 points since April 2025, but the May surge pushed it above 103 points.
Oil marketing companies implemented an aggressive pricing strategy in May 2026. According to Business Standard, OMCs hiked petrol and diesel prices by ₹3 each in May for the first time in four years. The companies then raised prices three more times in the same month, reflecting the sustained pressure from global oil market conditions. This marked a significant departure from the previous pricing strategy and represented the most substantial fuel price adjustments in recent years.
The fuel price increases were directly attributed to geopolitical developments in the West Asia region. As reported by Business Standard, the war situation forced oil marketing companies to implement the substantial price hikes to reflect the rising global oil market pressures. This represented a significant shift in fuel pricing strategy, with companies responding to external market conditions rather than following their typical pricing patterns.
