7-Eleven Gas Prices in September 2026: Up 7.46% Nationwide as California Hits $6.34
Across 3,643 7-Eleven, Speedway, and Stripes stations in 31 states, regular unleaded rose 31.6 cents in September and diesel rose 64.0 cents. 7-Eleven raised prices a day before Walmart and Murphy USA. California regular reached $6.34 and California diesel $8.34, while Colorado was the only state where prices fell.
Sep 30 Regular Avg
$4.543
+$0.316 (+7.46%) vs Sep 1
One-Day Jump (Sep 9)
+22.0¢
$4.205 → $4.426 overnight
Diesel Avg
$6.436
+$0.640 (+11.03%) vs Sep 1
7-Eleven vs. EIA Avg
+8.2¢
EIA National: $4.465 on Sep 28
The national regular average across the 7-Eleven network rose from $4.227 on September 1 to $4.543 on September 30, an increase of 31.6 cents (+7.46%). Prices had already risen 8.4 cents overnight between August 31 and September 1, so the increase from the end of August was 40.0 cents. Prices rose at 3,315 of 3,641 stations with readings at both ends of the month (91.0%), and the median station rose 30 cents.
The national market moved the same way. AAA reported crude back near $100 a barrel on Strait of Hormuz volatility, and its national average reached a record for the time of year on September 24. Unlike the warehouse and big-box brands we track, 7-Eleven stations priced 8.2 cents above the EIA's September 28 national average ($4.547 vs. $4.465). That is mostly because of where the stations are: 7-Eleven has large networks in California, Nevada, and Washington, and no stations in several of the cheapest states, including Georgia, Mississippi, and Louisiana.
1. Fuel Grades: September 1 vs. September 30
| Fuel Grade | Sep 1 | Sep 30 | Change ($) | Change (%) | Sep Avg | Sep High | Sep Low |
|---|---|---|---|---|---|---|---|
| Regular Unleaded | $4.227 | $4.543 | +$0.316 | +7.46% | $4.440 | $4.621 (9/23) | $4.205 (9/08) |
| Midgrade | $4.658 | $4.973 | +$0.315 | +6.76% | $4.870 | $5.052 (9/23) | $4.635 (9/08) |
| Premium | $5.006 | $5.320 | +$0.313 | +6.26% | $5.218 | $5.399 (9/23) | $4.983 (9/08) |
| E85 (98 stations) | $3.381 | $3.772 | +$0.391 | +11.57% | $3.670 | $4.045 (9/17) | $3.289 (9/08) |
| Diesel (2,489 stations) | $5.796 | $6.436 | +$0.640 | +11.03% | $6.301 | $6.583 (9/22) | $5.796 (9/01) |
2. Speedway vs. 7-Eleven: Gas Rose Similarly, Speedway Diesel Rose More
Speedway Forecourts
$4.427 Sep 30 avg
+$0.293 (+7.08%) month change
September Monthly Average: $4.363 • Diesel Sep 30: $6.540 (+83.4¢)
7-Eleven Forecourts
$4.568 Sep 30 avg
+$0.320 (+7.54%) month change
September Monthly Average: $4.457 • Diesel Sep 30: $6.406 (+58.3¢)
In August, Speedway fell 12.7 cents while 7-Eleven was flat. In September both banners rose by about 30 cents, and Speedway stayed about 14 cents cheaper on regular. Diesel was different: Speedway diesel rose 83.4 cents, 25 cents more than at 7-Eleven, and ended above 7-Eleven's diesel price. Speedway's stations are concentrated in the Great Lakes states, where diesel rose most: Indiana +$1.36, Michigan +$1.13, and Ohio +$1.01 across the network.
3. Intra-Month Swings & Day-of-Week Trends
The national regular average fell to its $4.205 low on September 8, then jumped 22.0 cents on Wednesday, September 9, a day before the same jump reached Walmart and Murphy USA. A second wave on September 15–17 added 18.4 cents, and the average peaked at $4.621 on September 23. It then eased for a week to close at $4.543.
Cheapest Day of the Week to Fill Up at 7-Eleven & Speedway
Tuesday was 8.1 cents cheaper than Thursday. Every big increase this month (September 9, 16, 17, and 23) happened on a Wednesday or Thursday.
4. Regional Breakdown
| Census Region | Stations | Sep 1 Avg | Sep 30 Avg | Net Change ($) | Net Change (%) | Sep Monthly Avg |
|---|---|---|---|---|---|---|
| Midwest | 421 | $4.086 | $4.448 | +$0.362 | +8.86% | $4.363 |
| West | 926 | $5.021 | $5.437 | +$0.416 | +8.28% | $5.248 |
| South | 1,840 | $3.863 | $4.148 | +$0.286 | +7.40% | $4.069 |
| Northeast | 456 | $4.222 | $4.398 | +$0.177 | +4.18% | $4.367 |
The Northeast rose least (+17.7¢), with New Jersey and Pennsylvania up only 5 to 15 cents. The West rose the most in cents (+41.6¢), led by California and Nevada. Colorado's 193 stations fell 29 cents, which kept the regional average lower than it would otherwise have been.
5. State-by-State Winners & Losers
| 1. Colorado (193 stations) | -29.0¢ (-6.90%) |
| 2. Idaho (3 stations) | +3.0¢ (+0.66%) |
| 3. New Jersey (40 stations) | +5.5¢ (+1.29%) |
| 4. Washington (81 stations) | +13.3¢ (+2.48%) |
| 5. Pennsylvania (116 stations) | +14.5¢ (+3.39%) |
| 6. Arizona (35 stations) | +17.7¢ (+4.00%) |
| 1. Wisconsin (9 stations) | +64.3¢ (+17.49%) |
| 2. Nevada (105 stations) | +74.1¢ (+15.30%) |
| 3. Oklahoma (95 stations) | +53.6¢ (+14.37%) |
| 4. Utah (87 stations) | +60.1¢ (+13.69%) |
| 5. Indiana (50 stations) | +45.3¢ (+13.44%) |
| 6. California (399 stations) | +71.2¢ (+12.65%) |
Colorado: Price Cycles Ended Low
Colorado prices moved in a repeating pattern of sudden jumps followed by slow declines. The statewide average rose 35 cents on September 9, 28 cents on September 17, and 21 cents on September 22, and after each jump it fell back over the following days. The last decline ran from September 22 to the end of the month and left Colorado at $3.919, 29 cents below September 1. Five Aurora stations fell 66 cents each ($4.199 to $3.539), the biggest decreases in the network.
Cheapest States on September 30Regular avg
- 1. Indiana (50 stations)$3.825
- 2. Colorado (193 stations)$3.919
- 3. Texas (458 stations)$3.990
- 4. New Mexico$4.006
- 5. North Carolina$4.091
- 6. Missouri$4.129
Most Expensive States on September 30Regular avg
- 1. California (399 stations)$6.340
- 2. Nevada (105 stations)$5.585
- 3. Washington (81 stations)$5.491
- 4. Oregon$5.154
- 5. Utah$4.993
- 6. Illinois$4.678
6. Station Extremes
Cheapest Stations on September 30
- 1. Schererville, IN (#43810)$3.279
- 2. South Bend, IN (#43939)$3.489
- 3. Aurora, CO (#21493)$3.539
- 4. Aurora, CO (#21562)$3.539
- 5. Aurora, CO (#29024)$3.539
Priciest Stations on September 30
- 1. Clovis, CA (#38756)$6.899
- 2. Dublin, CA (#33163)$6.799
- 3. Santa Rosa, CA (#33277)$6.759
- 4. Encinitas, CA (#24335)$6.699
- 5. Sand City, CA (#37946)$6.679
7. Diesel: California Passes $8.33
Diesel rose 64.0 cents (+11.03%) across the network to $6.436, 10.3 cents above the EIA's September 28 U.S. average. California's 238 diesel stations averaged $8.337 on September 30, up 97.8 cents. Washington ($7.376) and Oregon ($6.904) were next. The largest state-level diesel increases were mostly in the Great Lakes region:
Methodology: Daily station-level prices from the martgasprice.com price feed for 3,643 7-Eleven, Speedway, and Stripes stations with published fuel prices. National and state figures are simple averages of all stations reporting that day. No readings were collected on September 18, so that day is excluded. External benchmarks are from AAA and the EIA's Gasoline and Diesel Fuel Update (September 28, 2026).
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