Oregon diesel prices today
Oregon diesel prices todayDiesel averages $6.82 a gallon in Oregon on 2 October 2026 — the 4th most expensive of 51 states, and down $0.06 on the week.
Oregon against the other states
$0.45 a gallon above the unweighted mean of AAA's 51 state averages ($6.36). The cheapest diesel is in Texas at $5.79, the dearest in California at $8.38.
Regular gas in Oregon is $5.04, so diesel costs $1.77 more per gallon — and more than premium at $5.61.
Tax on a gallon of diesel
$0.24 federal + $0.40 Oregon · 14th highest of 51. The rest — about $6.17 — is the fuel itself, refining, distribution and the retailer’s margin.
Rates as of 1 January 2026. Local taxes, where they apply, are not included.
Diesel prices by city in Oregon
AAA's diesel averages for 9 Oregon metro areas, cheapest first — $0.36 a gallon between the two ends.
| Metro area | Diesel | vs state |
|---|---|---|
| Pendleton | $6.72 | −$0.10 |
| Albany | $6.73 | −$0.08 |
| Bend | $6.76 | −$0.05 |
| Portland | $6.78 | −$0.04 |
| Corvallis | $6.78 | −$0.03 |
| Salem | $6.80 | −$0.01 |
| Eugene & Springfield | $6.86 | +$0.04 |
| Medford & Ashland | $6.99 | +$0.17 |
| Grants Pass | $7.08 | +$0.26 |
Show the data as a table
What a diesel fill-up costs in Oregon
- Diesel car or SUV — 18 gal$122.69
- Heavy-duty pickup — 34 gal$231.74
- Box truck — 60 gal$408.96
- Semi truck, two tanks — 250 gal$1,704.00
Diesel in neighbouring states
More for Oregon
Frequently asked questions
How much is diesel in Oregon today?
$6.82 a gallon, AAA's Oregon average for 2 October 2026 — the 4th most expensive of 51 states. Regular gasoline is $5.04, so diesel costs $1.77 more per gallon.
Are diesel prices going up in Oregon?
Diesel is down $0.06 (0.9%) on a week ago, and up $2.34 on a year ago, when it was $4.48, on AAA's own earlier averages.
Where is diesel cheapest in Oregon?
Of the 9 metro areas AAA reports in Oregon, Pendleton has the cheapest diesel at $6.72 a gallon and Grants Pass the dearest at $7.08. Individual stations vary around these averages.
How much is the diesel tax in Oregon?
$0.64 a gallon: $0.24 federal plus $0.40 in Oregon state taxes and fees, the 14th highest of 51. The state average is $0.36. Rates as of 1 January 2026.
Is diesel cheaper in a neighbouring state?
Yes — Idaho ($6.53, $0.28 less), Nevada ($6.79, $0.03 less). On a 100-gallon fill that is up to $28.20; whether it is worth the drive depends on how far the border is.