Graph and download economic data for Average Price: Gasoline, All Types (Cost per Gallon/3.785 Liters) in Philadelphia-Camden-Wilmington, PA-NJ-DE-MD (CBSA) (APUS12B7471A) from Jan 1978 to Sep 2025 about DE, Philadelphia, MD, NJ, energy, PA, gas, urban, retail, price, and USA.

U.S. gasoline prices decreased across all fuel grades in July 2025 when compared to the month before. Regular gasoline prices rose to an average of 3.17 U.S. dollars per gallon. In the period of consideration, gasoline prices reached their highest level in June 2022. Differences in fuel grades Fuel grades at U.S. gas stations are differentiated by octane level. Higher grade fuels have higher octane levels, meaning that the fuel can be compressed more in the engine. This enables high-performance engines to create more power. Fuel may also vary from state to state and pump to pump. Some cities also have regulations on gasoline in order to improve air quality. Bioethanol is added to gasoline in some cases to meet the renewable fuel standard. Gasoline-run engines are able to run on blends with a bioethanol percentage of up to 25 percent. Gasoline prices reach historic high Primarily a result of the Russia-Ukraine war and inflation, the annual retail price of gasoline reached a new historic high in 2022, climbing to nearly four U.S. dollars per gallon. By 2024, annual prices had decreased again slightly, reaching 2014 levels.

In September 2025, one gallon of diesel cost an average of 3.75 U.S. dollars in the United States. That was an increase compared to the month prior, and higher than prices in September 2024. Impact of crude prices on motor fuel consumer prices Diesel prices are primarily determined by the cost of crude oil. In fact, crude oil regularly accounts for around 50 percent of end consumer prices of diesel. As such, supply restrictions or weak demand outlooks influence prices at the pump. The fall in diesel prices noted since the latter half of 2024 is a reflection of lower crude prices. Diesel and gasoline price development The usage of distillate fuel oil began in the 1930s, but until further development in the 1960s, diesel vehicles were mostly applied to commercial use only. In the U.S., diesel-powered cars remain a fairly small portion of the automobile market and diesel consumption is far lower than gasoline consumption. In general, gasoline also tends to be more widely available than diesel fuel and usually sells for a lower retail price. However, diesel engines have better fuel economy than gasoline engines and, as such, tend to be used for large commercial vehicles.