West Coast Diesel Price Trend
Weekly On-Road Diesel Fuel Prices · PADD 5
States: CA, WA, OR, NV, AZ, AK, HI
The West Coast (PADD 5) on-road diesel price is $6.56 per gallon as of 2026-05-11, down $0.070 (-1.1%) from the previous week. Over the past 12 weeks, prices in this region have ranged from $4.12 to $6.82 per gallon.
📈 Price History (19 Weeks)
📊 Weekly Price Data
| Week | Price ($/gal) | Change | Trend |
|---|---|---|---|
| 2026-05-11 | $6.56 | $-0.070 (-1.1%) | 📉 |
| 2026-05-04 | $6.63 | +$0.100 (+1.5%) | 📈 |
| 2026-04-27 | $6.53 | $-0.090 (-1.4%) | 📉 |
| 2026-04-20 | $6.62 | $-0.200 (-2.9%) | 📉 |
| 2026-04-13 | $6.82 | +$0.600 (+9.6%) | 📈 |
| 2026-04-06 | $6.22 | $-0.380 (-5.8%) | 📉 |
| 2026-03-30 | $6.60 | +$1.800 (+37.5%) | 📈 |
| 2026-03-23 | $4.80 | +$0.060 (+1.3%) | 📈 |
| 2026-03-16 | $4.74 | +$0.060 (+1.3%) | 📈 |
| 2026-03-09 | $4.68 | +$0.060 (+1.3%) | 📈 |
| 2026-03-02 | $4.62 | +$0.120 (+2.7%) | 📈 |
| 2026-02-23 | $4.50 | +$0.140 (+3.2%) | 📈 |
| 2026-02-16 | $4.36 | +$0.090 (+2.1%) | 📈 |
| 2026-02-09 | $4.27 | +$0.050 (+1.2%) | 📈 |
| 2026-02-02 | $4.22 | +$0.050 (+1.2%) | 📈 |
| 2026-01-26 | $4.17 | +$0.040 (+1.0%) | 📈 |
| 2026-01-19 | $4.13 | $-0.020 (-0.5%) | ↘️ |
| 2026-01-12 | $4.15 | +$0.030 (+0.7%) | 📈 |
| 2026-01-05 | $4.12 | — | ➡️ |
⚖️ 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 $3.2¢ more per mile than gasoline in this region. Over a 100-mile trip, that's a difference of $3.24 .
🛣️ Diesel Trip Cost Estimates (West Coast)
| Distance | 🚗 Diesel Car (35 MPG) | 🚐 Diesel Van (24 MPG) | 🚛 Diesel Truck (18 MPG) |
|---|---|---|---|
| 10 miles | $1.87 | $2.73 | $3.64 |
| 25 miles | $4.69 | $6.83 | $9.11 |
| 50 miles | $9.37 | $13.67 | $18.22 |
| 100 miles | $18.74 | $27.33 | $36.44 |
| 200 miles | $37.49 | $54.67 | $72.89 |
Based on current West Coast diesel price of $6.56/gal.
About West Coast Diesel Prices (PADD 5)
The West Coast consistently has the highest diesel prices in the nation, driven by strict environmental regulations (including California's LCFS and cap-and-trade programs), limited pipeline access from Gulf Coast refineries, and higher state fuel taxes. California alone accounts for over 60% of this region's diesel consumption.
Key Facts
- Region: West Coast (PADD 5)
- States covered: CA, WA, OR, NV, AZ, AK, HI
- Current price: $6.56/gallon (as of 2026-05-11)
- 12-week low: $4.12/gal (2026-01-05)
- 12-week high: $6.82/gal (2026-04-13)
- Data source: U.S. Energy Information Administration (EIA)
Why West Coast Diesel Prices Matter
Diesel fuel powers the trucks, buses, and freight vehicles that keep the West 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 CA and surrounding states track these prices closely to manage fuel budgets and adjust surcharges.