Petrol Diesel Price Today: Fuel prices remain an important part of household and business expenses, especially for people who travel regularly or depend on road transport. Petrol and diesel rates are reviewed on a daily basis in India, and prices can vary significantly from one location to another due to differences in taxes, transportation expenses and other factors.

According to the latest available rates for August 19, 2026, diesel prices in several major cities have remained unchanged compared with the previous day. However, consumers may still notice a considerable difference in fuel prices when comparing one city or state with another.

Here is a detailed look at the latest diesel prices and the factors that determine how much motorists ultimately pay at fuel stations.

Diesel Price Today in Major Cities

As per the available fuel price data for August 19, diesel rates in major cities are as follows:

The available data indicates that these cities have not recorded a change in diesel prices compared with the previous day. The rates are based on information attributed to Indian Oil Corporation Limited (IOCL).

Consumers should keep in mind that fuel prices can differ even within the same state depending on local taxes, transportation costs and the location of the fuel station.

Diesel Rates in Other Cities

The difference in diesel prices becomes clearer when rates across different locations are compared. According to the city-wise figures available for August 19, diesel is being sold at the following prices:

These figures show why checking the local rate before refuelling can be useful, particularly for motorists travelling between different cities or states.

Why Do Diesel Prices Vary From One City to Another?

Diesel does not have a single uniform retail price across India. One of the biggest reasons is the difference in taxes imposed by individual state governments.

State-level Value Added Tax (VAT) or sales tax can vary considerably. As a result, even when the underlying cost of fuel is similar, the final amount charged to consumers can be different.

Transportation and logistics expenses also contribute to the variation. Supplying fuel to a city located farther away from a refinery, storage facility or distribution terminal may involve higher transportation costs.

Local levies and other applicable charges can further influence the final retail price.

How Is the Retail Price of Diesel Calculated?

The amount displayed at a petrol pump is made up of several components rather than just the cost of crude oil.

International crude oil prices form an important part of the calculation because India imports a significant portion of its crude requirement. Refining costs, freight expenses and distribution charges are then added.

The price also includes applicable central duties, state VAT or sales tax and the commission paid to fuel station dealers.

All these components together determine the final price motorists pay for every litre of diesel.

Crude Oil and Rupee-Dollar Exchange Rate Matter

Global crude oil prices can have a major influence on domestic fuel costs. When international oil becomes more expensive, the cost of sourcing crude for Indian refiners can increase. A fall in global crude prices can work in the opposite direction, although changes in retail prices also depend on several other components.

The rupee-dollar exchange rate is another important factor because international crude oil transactions are largely conducted in US dollars.

If the rupee weakens against the dollar, importing crude oil can become more expensive even when international oil prices remain relatively stable. A stronger rupee, on the other hand, may help reduce some of the import-related cost pressure.

Key Factors That Influence Diesel Prices

Several factors can affect the amount consumers pay for diesel. International crude oil prices are among the most closely watched indicators, while changes in the rupee's value against the US dollar can alter the effective import cost.

Domestic demand also plays a role in the broader fuel market. Taxes imposed by the Centre and state governments contribute significantly to retail prices, while transportation costs vary according to the distance between supply centres and individual markets.

Dealer commission is another component included in the final pump price.

What Taxes Are Included in Diesel Prices?

Taxes account for an important portion of India's fuel pricing structure. Diesel prices can include central excise-related duties and state VAT or sales tax, along with applicable cesses or local charges.

Since states determine their own VAT structure, the tax burden is not identical across the country. This is one of the main reasons motorists may see noticeably different diesel prices after crossing a state border.

Is Diesel Covered Under GST?

At present, diesel remains outside the Goods and Services Tax (GST) framework. Fuel is therefore subject to the existing system of central duties and state-level taxes rather than a uniform GST rate.

If petrol and diesel are brought under GST in the future, the taxation structure could change significantly. Any such move would depend on government policy and decisions involving the GST Council.

Why Consumers Should Check Fuel Rates Daily

Even relatively small changes in petrol or diesel prices can make a difference for people who drive long distances every day. The impact can be even greater for commercial vehicle operators, taxi drivers, logistics businesses and companies that manage large vehicle fleets.

Checking the latest fuel price before visiting a petrol pump can therefore help consumers keep track of their daily transportation expenses.

For August 19, 2026, the available data shows no day-on-day change in diesel prices across the major cities listed above. However, rates continue to differ considerably from one location to another because of state taxes, logistics costs and other components of India's fuel pricing system.