Fuel Market Report: Aug 31st – Sept 6th, 2025


Did You Know That R99 Is The Same Cost As Diesel Currently?
Call to set up R99 Mobile Fueling Onsite Service in Portland at the same cost of retail diesel. Dyed untaxed R99 is also available. Give us a call today to schedule your delivery.
Wholesale Price Average 8/23/25
Wholesale Low | Wholesale Avg | |
---|---|---|
E10 | $2.49 | $2.66 |
B5 | $2.89 | $3.03 |
B20 | $2.90 | $3.01 |
R99 | $3.82 | $2.96 |
Average Retail Prices 8/23/25
National | Oregon | Washington | |
---|---|---|---|
E10 | $3.16 | $3.97 | $4.40 |
B5 | $3.68 | $4.45 | $5.01 |
Taxes
Federal | State: OR | Local | State: WA | |
---|---|---|---|---|
Gas | $0.184 | $0.40 | $0-.13 | $0.494 |
Diesel | $0.244 | $0.40 | $0-.13 | $0.494 |
Portland Retail Fuel Price Variance

Fuel Market News
Fuel prices are up across the board this past week, with both diesel and gas jumping over $0.15/gal. Rack averages in Portland jumped $0.20/gal for E10 gasoline and $0.16/gal for diesel. This comes on the heels of the Olympic pipeline maintenance this past week, after issues arose within the pipeline system requiring un-forecasted maintenance. This directly affects supply throughout the PNW, creating pricing bubbles throughout Washington, Oregon & California. Gas prices are expected to continue to climb this week, with maintenance yet to be fully completed. This will also roll into the switch from Summer blends of fuel to Winter blends of fuel, which will begin in the coming weeks. This may temporarily spike prices, with pricing drops thereafter.

Important Note: Per the City Of Portland, “Distributors in the City of Portland are required to meet the minimum biofuel content requirements for all fuel they distribute beginning on May 15, 2024. All diesel fuel distributed to retail stations, non-retail dealers, or wholesale purchaser-consumers must include a minimum of 15% biofuel content, from either renewable diesel or biodiesel. This requirement increases to 50% on May 15, 2026, and 99% on May 15, 2030”.
Want to know what to expect this Fall in regards to our diesel market? You can read our 2025 Diesel Market Outlook For Oregon.
Crude oil is trading just below $65, at a current price of $62.35/barrel. This is $2.37/barrel lower than it was last week.
Crude oil is the main ingredient for gasoline and diesel. Per AAA, on average about 50% of what you pay at the pump is the price of crude oil, breaking down as 25% refining, 11% distribution & marketing, and 14% taxes – a helpful breakdown for consumers wondering why they are paying the prices that they pay. Crude Oil is currently trading at $62.35/barrel compared to $64.72/barrel last week and $68 a year ago.
It’s essential to recognize that fuel prices result from a complex interplay of the factors mentioned above and other regional factors. Additionally, prices may vary by specific regions within Oregon and Washington. For the most precise and up-to-date information on fuel prices and the causes for these price changes within your area, use the links below for AAA & GasBuddy.
If you have any questions, feel free to contact Star Oilco and speak to one of our fuel market advisors to discuss how the market can impact your business.