US Road Fuel Cost Estimator
San Diego → San Antonio
How much petrol or diesel does it cost to drive from San Diego to San Antonio? Breakdown by vehicle type using today's United States fuel prices, updated from the datasource.
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Fuel Cost by Vehicle Type
Select your vehicle to see the detailed fuel breakdown for this route. Prices as of May 11, 2026.
Monthly Fleet Fuel Cost
Running this route regularly? Estimated one-way fuel cost per month, by trip frequency. Figures use primary fuel for each vehicle type (toll excluded).
| Vehicle | 1×/month | 5×/month | 10×/month | 22×/month |
|---|---|---|---|---|
Motorcycle Regular | USD 244 | USD 1,221 | USD 2,441 | USD 5,371 |
Car / SUV Regular | USD 814 | USD 4,069 | USD 8,138 | USD 17,904 |
Van / MPV Diesel | USD 1,363 | USD 6,814 | USD 13,628 | USD 29,981 |
Lorry Diesel | USD 2,453 | USD 12,265 | USD 24,530 | USD 53,965 |
Add USD 0.00 toll per one-way trip to get total trip cost per journey.
Full Fuel Cost Comparison
All vehicle types × all fuel types for this route.
| Vehicle | km/L | Regular | Midgrade | Premium | Diesel | Fuel + Toll |
|---|---|---|---|---|---|---|
| Motorcycle | 40 | USD 244.14 | USD 275.57 | — | — | USD 244.14 |
| Car / SUV | 12 | USD 813.81 | USD 918.57 | — | — | USD 813.81 |
| Van / MPV | 9 | USD 1085.08 | — | — | USD 1362.76 | USD 1362.76 |
| Lorry | 5 | — | — | — | USD 2452.97 | USD 2452.97 |
"Fuel + Toll" uses the primary fuel type for each vehicle. Toll is one-way estimate.
Today's Fuel Prices in United States
EIA weekly retail fuel prices used in all calculations above
Last updated: May 11, 2026. Prices are sourced from EIA weekly retail fuel prices.
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Common Questions: San Diego to San Antonio
How far is San Diego to San Antonio?
The highway distance from San Diego to San Antonio is approximately 2175 km. The estimated driving time is 29h under normal highway conditions.
How much petrol does a car use from San Diego to San Antonio?
A typical car with 12 km/L mileage uses approximately 181.3 litres of petrol. At today's Regular price (USD 4.49/L), that costs USD 813.81.
How much does a lorry spend on diesel from San Diego to San Antonio?
A lorry averaging 5 km/L needs about 435.0 litres of diesel for this route. At USD 5.64/L, the fuel cost is USD 2452.97 one-way.
What is the toll charge from San Diego to San Antonio?
The estimated one-way toll on this highway route is approximately USD 0.00. US tolls are state- and corridor-specific. Route-level estimates are kept at zero and the pages point to FHWA toll-facility references.
How much does a motorcycle spend on fuel from San Diego to San Antonio?
A motorcycle averaging 40 km/L uses about 54.4 litres. At today's Regular price, that's USD 244.14, making it the most fuel-efficient option for this route.
What is the total cost (fuel + toll) for a delivery van on this route?
A delivery van using diesel at 9 km/L needs 241.7 litres, costing USD 1362.76 in fuel. Add the USD 0.00 toll for a total one-way cost of approximately USD 1362.76.
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