Pennsylvania diesel prices today
Pennsylvania diesel prices todayDiesel averages $6.57 a gallon in Pennsylvania on 3 October 2026 — the 10th most expensive of 51 states, and down $0.03 on the week.
Pennsylvania against the other states
$0.22 a gallon above the unweighted mean of AAA's 51 state averages ($6.35). The cheapest diesel is in Texas at $5.78, the dearest in California at $8.38.
Regular gas in Pennsylvania is $4.49, so diesel costs $2.07 more per gallon — and more than premium at $5.33.
Tax on a gallon of diesel
$0.24 federal + $0.75 Pennsylvania · 3rd highest of 51. The rest — about $5.57 — 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 Pennsylvania
AAA's diesel averages for 19 Pennsylvania metro areas, cheapest first — $0.13 a gallon between the two ends.
| Metro area | Diesel | vs state |
|---|---|---|
| Philadelphia | $6.50 | −$0.06 |
| Reading | $6.52 | −$0.05 |
| Chambersburg & Waynesboro | $6.53 | −$0.04 |
| Allentown, Bethlehem & Easton | $6.53 | −$0.04 |
| Williamsport | $6.53 | −$0.04 |
| Lancaster | $6.54 | −$0.02 |
| York | $6.54 | −$0.02 |
| Johnstown | $6.55 | −$0.02 |
| Harrisburg | $6.55 | −$0.02 |
| Gettysburg | $6.56 | −$0.01 |
| State College | $6.56 | −$0.01 |
| East Stroudsburg | $6.56 | −$0.00 |
| Bloomsburg & Berwick | $6.57 | +$0.00 |
| Erie | $6.59 | +$0.02 |
| Altoona | $6.60 | +$0.04 |
| Mercer County | $6.62 | +$0.05 |
| Lebanon | $6.62 | +$0.06 |
| Pittsburgh | $6.62 | +$0.06 |
| Scranton, Wilkes-Barre & Hazleton | $6.63 | +$0.06 |
Show the data as a table
What a diesel fill-up costs in Pennsylvania
- Diesel car or SUV — 18 gal$118.19
- Heavy-duty pickup — 34 gal$223.24
- Box truck — 60 gal$393.96
- Semi truck, two tanks — 250 gal$1,641.50
Diesel in neighbouring states
More for Pennsylvania
Frequently asked questions
How much is diesel in Pennsylvania today?
$6.57 a gallon, AAA's Pennsylvania average for 3 October 2026 — the 10th most expensive of 51 states. Regular gasoline is $4.49, so diesel costs $2.07 more per gallon.
Are diesel prices going up in Pennsylvania?
Diesel is down $0.03 (0.5%) on a week ago, and up $2.58 on a year ago, when it was $3.99, on AAA's own earlier averages.
Where is diesel cheapest in Pennsylvania?
Of the 19 metro areas AAA reports in Pennsylvania, Philadelphia has the cheapest diesel at $6.50 a gallon and Scranton, Wilkes-Barre & Hazleton the dearest at $6.63. Individual stations vary around these averages.
How much is the diesel tax in Pennsylvania?
$0.99 a gallon: $0.24 federal plus $0.75 in Pennsylvania state taxes and fees, the 3rd highest of 51. The state average is $0.36. Rates as of 1 January 2026.
Is diesel cheaper in a neighbouring state?
Yes — New Jersey ($6.37, $0.19 less), Delaware ($6.41, $0.15 less), Maryland ($6.42, $0.15 less), West Virginia ($6.43, $0.13 less), New York ($6.52, $0.05 less), Ohio ($6.53, $0.04 less). On a 100-gallon fill that is up to $19.30; whether it is worth the drive depends on how far the border is.