Itsys Solutions analysed fuel prices across ten major U.S. states — California, Texas, Florida, Georgia, Illinois, North Carolina, New Jersey, New York, Ohio, and Pennsylvania comparing August 2024 to August 2025.
The 12-month cycle reveals a clear pattern: mid-2025 price spikes across several markets, followed by broad corrections heading into late summer 2025. The result has been meaningful relief for consumers, commercial fleets, and fuel retailers adjusting to shifting wholesale and demand conditions.
Across nearly all states, Regular gasoline recorded the largest percentage declines, while Diesel displayed sharper volatility in high-cost markets like California and New York.
California & Florida
In California, Diesel averaged $4.95 in Aug 2024, rose to $5.04 in May 2025, before falling to $4.41 in Aug 2025 (−54¢, −10.9%). Regular gasoline was $4.57 in Aug 2024, peaked at $4.83 in May 2025, and ended at $4.08 (−49¢, −10.7%). Premium reached $5.24 in May before settling at $4.67 (−31¢, −6.2%).
California showed the highest volatility among the 10 states, briefly crossing the $5.00 threshold in both Diesel and Premium before correcting sharply. The May 2025 spike suggests seasonal demand pressure combined with wholesale cost adjustments, followed by late-summer normalization.
In Florida, Diesel slipped from $3.85 in Aug 2024 to $3.76 in Jul 2025, closing at $3.64 (−21¢, −5.5%). Regular fell from $3.41 to $3.05 (−36¢, −10.6%). Premium dropped from $4.15 to $3.82 (−33¢, −8.0%).
Florida experienced smoother, more gradual corrections compared to California. Regular gasoline showed stronger percentage relief than Diesel, reflecting consumer-focused repricing heading into peak travel season.
Georgia & Illinois
In Georgia, Diesel was $3.77 in Aug 2024, dipped to $3.61 in Jun 2025, and ended at $3.51 (−27¢, −7.1%). Regular declined from $3.22 to $2.88 (−34¢, −10.6%). Premium fell from $3.96 to $3.70 (−26¢, −6.6%).
Georgia’s trajectory reflects consistent downward pressure throughout 2025, with limited volatility. Regular gasoline again showed stronger correction relative to Diesel.
In Illinois, Diesel slipped from $3.92 to $3.72 (−20¢, −5.1%). Regular declined significantly from $3.84 in Aug 2024 to $3.29 (−55¢, −14.3%). Premium dropped from $4.80 to $4.28 (−52¢, −10.8%).
Illinois recorded one of the steepest Regular gasoline corrections among all states analyzed. A double-digit percentage drop exceeding 14% suggests substantial wholesale-to-retail adjustment during the 12-month period.
North Carolina & New Jersey
In North Carolina, Diesel was $3.85 in Aug 2024, dropped to $3.67 in Feb 2025, and ended at $3.46 (−39¢, −10.1%). Regular fell from $3.26 to $2.85 (−41¢, −12.6%). Premium eased from $4.05 to $3.70 (−35¢, −8.6%).
North Carolina showed consistent downward movement across all fuel grades, with particularly strong Regular gasoline correction.
In New Jersey, Diesel briefly rose to $3.84 in Jun 2025 before retreating to $3.69 (−4¢, −1.1%). Regular slipped from $3.28 to $2.98 (−30¢, −9.1%). Premium fell from $3.95 to $3.67 (−28¢, −7.1%).
New Jersey displayed relatively limited Diesel volatility compared to neighboring states, though gasoline grades experienced stronger percentage declines.
New York & Ohio
In New York, Diesel was $4.38 in Aug 2024, dipped to $4.14 in Oct 2024, and landed at $3.83 in Aug 2025 (−55¢, −12.6%). Regular fell from $3.55 to $3.09 (−47¢, −13.1%). Premium dropped from $4.40 to $3.96 (−43¢, −9.9%).
New York recorded double-digit percentage declines across Diesel and Regular gasoline, reinforcing the broader Northeast correction trend.
In Ohio, Diesel averaged $3.98 in Aug 2024, softened to $3.74 in Nov 2024, and ended at $3.66 (−32¢, −8.1%). Regular fell from $3.53 to $3.04 (−49¢, −13.9%). Premium eased from $4.53 to $4.04 (−49¢, −10.8%).
Ohio emerged as one of the strongest Regular gasoline correction markets, nearly touching a 14% year-over-year decline.
Texas & Pennsylvania
In Texas, Diesel started at $3.34, peaked at $3.45 in Feb 2025, then corrected to $3.13 (−21¢, −6.3%). Regular declined from $3.04 to $2.74 (−30¢, −9.9%). Premium dropped from $3.78 to $3.59 (−19¢, −5.0%).
Texas remained the most affordable state among the 10 analyzed, maintaining sub-$3 Regular gasoline pricing by August 2025.
In Pennsylvania, Diesel fell from $4.29 to $4.01 (−28¢, −6.5%). Regular dipped from $3.64 to $3.23 (−41¢, −11.3%). Premium declined from $4.39 to $4.00 (−39¢, −8.9%).
Pennsylvania followed the broader Mid-Atlantic trend of moderate Diesel correction paired with stronger gasoline declines.
Key Insights
- Regular gasoline posted the steepest percentage declines, with Ohio, Illinois, and New York falling between 13–14%.
- California showed the highest volatility, exceeding $5.00 in mid-2025 before correcting sharply by August.
- Texas remained the most affordable large market, with Regular at $2.74 and Diesel at $3.13 by August 2025.
- Diesel corrections were widespread but generally less aggressive than Regular gasoline, except in high-cost states.
- Mid-2025 peaks suggest seasonal demand and cost pass-through effects that normalized by late summer.
Bottom Line
After mid-2025 spikes, fuel prices broadly corrected across all ten states, delivering meaningful relief to consumers, fleets, and supply chains by August 2025.
The August-to-August comparison highlights how quickly fuel markets can move through inflation cycles and how state-level tracking is essential for understanding margin dynamics, regional competitiveness, and pricing strategy performance.
