Gulf Coast Diesel Price Trend
Weekly On-Road Diesel Fuel Prices · PADD 3
States: TX, LA, MS, AL, AR, NM
The Gulf Coast (PADD 3) on-road diesel price is $5.15 per gallon as of 2026-05-11, down $0.030 (-0.6%) from the previous week. Over the past 12 weeks, prices in this region have ranged from $3.31 to $5.31 per gallon.
📈 Price History (19 Weeks)
📊 Weekly Price Data
| Week | Price ($/gal) | Change | Trend |
|---|---|---|---|
| 2026-05-11 | $5.15 | $-0.030 (-0.6%) | ↘️ |
| 2026-05-04 | $5.18 | +$0.170 (+3.4%) | 📈 |
| 2026-04-27 | $5.01 | $-0.060 (-1.2%) | 📉 |
| 2026-04-20 | $5.07 | $-0.240 (-4.5%) | 📉 |
| 2026-04-13 | $5.31 | +$0.490 (+10.2%) | 📈 |
| 2026-04-06 | $4.82 | $-0.290 (-5.7%) | 📉 |
| 2026-03-30 | $5.11 | +$1.170 (+29.7%) | 📈 |
| 2026-03-23 | $3.94 | +$0.050 (+1.3%) | 📈 |
| 2026-03-16 | $3.89 | +$0.060 (+1.6%) | 📈 |
| 2026-03-09 | $3.83 | +$0.060 (+1.6%) | 📈 |
| 2026-03-02 | $3.77 | +$0.120 (+3.3%) | 📈 |
| 2026-02-23 | $3.65 | +$0.120 (+3.4%) | 📈 |
| 2026-02-16 | $3.53 | +$0.080 (+2.3%) | 📈 |
| 2026-02-09 | $3.45 | +$0.050 (+1.5%) | 📈 |
| 2026-02-02 | $3.40 | +$0.040 (+1.2%) | 📈 |
| 2026-01-26 | $3.36 | +$0.040 (+1.2%) | 📈 |
| 2026-01-19 | $3.32 | $-0.020 (-0.6%) | ↘️ |
| 2026-01-12 | $3.34 | +$0.030 (+0.9%) | ↗️ |
| 2026-01-05 | $3.31 | — | ➡️ |
⚖️ Diesel vs Gasoline Comparison
How does diesel compare to regular gasoline for ground transportation? Diesel vehicles typically achieve better fuel efficiency (35 MPG vs 30 MPG), which can offset the higher per-gallon cost on longer trips.
Diesel
Gasoline
Bottom line: On a per-mile basis, diesel costs $-0.8¢ less per mile than gasoline in this region. Over a 100-mile trip, that's a difference of $0.79 .
🛣️ Diesel Trip Cost Estimates (Gulf Coast)
| Distance | 🚗 Diesel Car (35 MPG) | 🚐 Diesel Van (24 MPG) | 🚛 Diesel Truck (18 MPG) |
|---|---|---|---|
| 10 miles | $1.47 | $2.15 | $2.86 |
| 25 miles | $3.68 | $5.36 | $7.15 |
| 50 miles | $7.36 | $10.73 | $14.31 |
| 100 miles | $14.71 | $21.46 | $28.61 |
| 200 miles | $29.43 | $42.92 | $57.22 |
Based on current Gulf Coast diesel price of $5.15/gal.
About Gulf Coast Diesel Prices (PADD 3)
The Gulf Coast region is the heart of US refining capacity, accounting for over 50% of total US refinery output. As a result, diesel prices here are typically the lowest in the nation. This region is also a major export hub for refined products, and prices are closely tied to global crude oil benchmarks.
Key Facts
- Region: Gulf Coast (PADD 3)
- States covered: TX, LA, MS, AL, AR, NM
- Current price: $5.15/gallon (as of 2026-05-11)
- 12-week low: $3.31/gal (2026-01-05)
- 12-week high: $5.31/gal (2026-04-13)
- Data source: U.S. Energy Information Administration (EIA)
Why Gulf Coast Diesel Prices Matter
Diesel fuel powers the trucks, buses, and freight vehicles that keep the Gulf Coast economy moving. When diesel prices rise, the cost of shipping goods increases, which can lead to higher consumer prices at the store. Fleet operators, truck drivers, and logistics companies in TX and surrounding states track these prices closely to manage fuel budgets and adjust surcharges.