INDIANA — Drivers across Indiana are facing a sharp spike at the pump this week as average gasoline prices shot up 43.5 cents per gallon over the last seven days, pushing the state average to $4.01 per gallon.
According to GasBuddy’s survey of 3,271 Indiana stations, current prices are 48.5 cents per gallon higher than a month ago and 98.6 cents higher than this time last year.
Prices across the Hoosier State showed significant variance. Yesterday, the cheapest station in Indiana was priced at $3.46 per gallon, while the most expensive reached $4.59 per gallon—a spread of $1.13 per gallon.
National Averages and Regional Comparisons
Nationwide, gas prices also saw a notable increase, rising 18.5 cents per gallon over the past week to reach a national average of $4.44 per gallon. That figure reflects a 34.4-cent jump from a month ago and sits $1.30 per gallon higher than one year ago, based on GasBuddy data tracking over 150,000 stations across the country.
Diesel fuel experienced an even steeper national increase, climbing 30.7 cents in the last week to average $6.49 per gallon.
Neighboring metro areas also felt the pinch over the last week:
- Indianapolis: $3.97/g (Up 43.9 cents from $3.54/g)
- Cincinnati: $4.47/g (Up 38.2 cents from $4.08/g)
- Champaign: $4.77/g (Up 27.1 cents from $4.50/g)
Five-Year Historical Trend
Today’s state average of $4.01 per gallon represents a steep increase compared to September 21 averages over the last five years:
- Sept. 21, 2025: $3.03/g (U.S. Average: $3.14/g)
- Sept. 21, 2024: $3.18/g (U.S. Average: $3.19/g)
- Sept. 21, 2023: $3.70/g (U.S. Average: $3.83/g)
- Sept. 21, 2022: $3.74/g (U.S. Average: $3.67/g)
- Sept. 21, 2021: $3.17/g (U.S. Average: $3.19/g)
Regional Refineries and Global Pressures
Industry experts point to localized refinery disruptions alongside international conflicts as the primary catalysts for the sudden jump.
“Average gasoline prices rose in virtually every state over the last week, with 45 states seeing increases of more than 3 cents per gallon, led by the Great Lakes region where refinery issues sent Michigan, Indiana, Illinois, Ohio, and Wisconsin all up more than 30 cents per gallon,” said Patrick De Haan, head of petroleum analysis at GasBuddy.
“Diesel rose in every state, with five states seeing increases exceeding 50 cents per gallon, as continued strikes on Russian oil refineries tighten global diesel supply—a pressure further amplified in the Great Lakes by regional refinery issues,” De Haan added. “Any broader directional change will depend heavily on overseas developments, and with new Houthi attacks and fresh U.S.-Iran escalations, the outlook remains deeply uncertain.”
