Petrol and diesel prices across major Indian cities remain unchanged on September 21, 2026, according to the rates cited in the available data. Oil marketing companies have maintained existing retail prices even as crude oil continues to trade at elevated levels internationally.

Brent crude is hovering around $104 per barrel, but this has not yet resulted in a fresh revision of domestic petrol and diesel rates in the cities covered by the data.

Fuel prices are not uniform across India because the final retail rate can vary based on state and local taxes, transportation costs and other components of the pricing structure.

Petrol and Diesel Prices Remain Stable

According to the available figures, oil companies have not announced a fresh increase or reduction in fuel prices. Rates were also maintained at their previous levels on Sunday, September 20.

The source data states that oil marketing companies revised fuel rates four times during May 2026, with the last revision taking place on May 25, 2026.

Despite fluctuations in global energy markets, motorists in the listed cities have therefore not seen a corresponding fresh change at fuel pumps.

Petrol and Diesel Prices on September 21, 2026

Here are the city-wise rates provided in the available data:

Among these cities, Kolkata has the highest quoted petrol price at ₹113.51 per litre, while Chandigarh has the lowest at ₹101.51. Kolkata also has the highest listed diesel rate at ₹99.82 per litre, compared with ₹89.47 in Chandigarh.

Delhi motorists are paying ₹102.12 per litre for petrol and ₹95.20 for diesel. In Mumbai, the quoted rates are ₹111.21 and ₹97.83 per litre, respectively.

Why Fuel Prices Vary Across Cities

Petrol and diesel can have different retail prices across states and cities even when supplied by the same oil marketing companies.

State and local taxes are among the major reasons for these differences. Transportation, distribution and other expenses can also affect the final price displayed at a fuel station.

This is why motorists should check the rate applicable to their location rather than relying on the price reported for another city.

How Global Crude Prices Affect Fuel Rates

International crude prices are closely watched because India depends substantially on imported crude to meet its energy requirements. Higher international prices can increase the costs faced by oil marketing companies.

However, movements in crude oil do not necessarily result in an immediate or identical change in retail petrol and diesel prices. Domestic prices can depend on several factors, including international product prices, exchange-rate movements, taxes and pricing decisions by oil marketing companies.

With Brent crude trading near $104 per barrel according to the cited market data, global oil prices remain an important factor to watch.

Could Petrol and Diesel Prices Change Next?

It cannot be determined from crude prices alone whether petrol and diesel will become cheaper or more expensive in the coming days.

International oil prices can move quickly because of geopolitical developments, global demand, supply conditions and broader economic factors. Currency fluctuations can also affect India's crude import costs.

For now, the available September 21, 2026 data indicates no fresh change in the listed cities. Consumers should still check the latest rate at their local fuel station before refuelling because prices vary by location and may be revised in the future.