Overview
Gas Prices is built on three official weekly surveys: the U.S. Energy Information Administration retail gasoline and diesel survey (since 1990, including nine states and ten metro areas), the European Commission Weekly Oil Bulletin for every EU member (since 2005) and the UK government weekly road fuel prices (since 2003). Each price is stored as published, in the currency drivers pay, and can be converted to any currency and to liters or gallons on request. Use it for fuel cost calculators, fleet budgeting, delivery surcharges and cross-country cost comparisons.
Endpoint
One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.
curl "https://api.apiverve.com/v1/gasprices?country=US&area=CA¤cy=USD&unit=liter&date=2024-06-15" \
-H "x-api-key: your_api_key_here"const res = await fetch('https://api.apiverve.com/v1/gasprices?country=US&area=CA¤cy=USD&unit=liter&date=2024-06-15', {
headers: { 'x-api-key': 'your_api_key_here' },
});
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const { data } = await res.json();
console.log(data);import requests
res = requests.get(
"https://api.apiverve.com/v1/gasprices?country=US&area=CA¤cy=USD&unit=liter&date=2024-06-15",
headers={"x-api-key": "your_api_key_here"},
timeout=15,
)
res.raise_for_status()
print(res.json()["data"])package main
import (
"fmt"
"io"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/gasprices?country=US&area=CA¤cy=USD&unit=liter&date=2024-06-15", nil)
req.Header.Set("x-api-key", "your_api_key_here")
res, err := http.DefaultClient.Do(req)
if err != nil {
panic(err)
}
defer res.Body.Close()
out, _ := io.ReadAll(res.Body)
fmt.Println(string(out))
}Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.
Authentication
Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.
A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.
Parameters
Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them.
| Parameter | Type | Description |
|---|---|---|
countryOptional | string | Country to get prices for: US, GB, EU (the EU average) or any EU member code such as DE, FR or PL. Defaults to US. Countries other than US require a paid plan.USGBEUATBEBGCYCZ+22 |
areaOptional | string | US only: a state code (CA, CO, FL, MA, MN, NY, OH, TX, WA), a region (eastcoast, midwest, gulfcoast, rockymountain, westcoast and the PADD 1 sub-regions) or a city (losangeles, chicago, houston, newyorkcity and more). Omit for the national average. Requires a paid plan.USeastcoastnewenglandcentralatlanticloweratlanticmidwestgulfcoastrockymountain+21 |
currencyOptionalPremium | string | Currency to return prices in, as an ISO code (e.g. USD, EUR, GBP). Defaults to the country's own currency. length 3–3 |
unitOptional | string | Volume unit to price per: liter or gallon. Defaults to the source's unit (gallon for the US, liter elsewhere).litergallon |
dateOptionalPremium | string | Date to look up (YYYY-MM-DD). Returns the survey week in effect on that date. Omit for the latest week. date |
Response
Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.
{
"status": "ok",
"error": null,
"data": {
"country": "US",
"countryName": "United States",
"area": "US",
"areaName": "United States",
"areaType": "national",
"week": "2026-09-28",
"currency": "USD",
"unit": "gallon",
"prices": {
"regular": 4.465,
"midgrade": 5.073,
"premium": 5.482,
"diesel": 6.382,
"allGrades": 4.603,
"lpg": null
},
"changeDirection": "down",
"previousWeek": "2026-09-21",
"weeklyChange": {
"regular": -0.013,
"midgrade": 0.012,
"premium": 0.022,
"diesel": -0.147,
"allGrades": -0.007,
"lpg": null
},
"yearAgoWeek": "2025-09-29",
"yearlyChange": {
"regular": 1.347,
"midgrade": 1.366,
"premium": 1.415,
"diesel": 2.628,
"allGrades": 1.355,
"lpg": null
},
"nativeCurrency": "USD",
"nativeUnit": "gallon",
"exchangeRate": 1
}
}
Response fields
Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.
| Field | Type | Example | Description |
|---|---|---|---|
country | string | "US" | ISO country code the prices apply to (EU for the European Union average) |
countryName | string | "United States" | Country name |
area | string | "US" | Area code the prices apply to: the country code for national prices, or a US state code, region or city key |
areaName | string | "United States" | Human-readable area name |
areaType | string | "national" | Area granularity: national, union, region, state or city |
week | string | "2026-09-28" | Survey week (Monday) in YYYY-MM-DD format |
currency | string | "USD" | ISO currency code of all prices and changes in this response |
unit | string | "gallon" | Volume unit prices are quoted per: gallon or liter |
prices | object | {...} | Average retail price per unit by fuel grade |
regular | number | 4.465 | Average retail price of regular unleaded per unit; null where the source does not survey it for this area |
midgradePremium | number | 5.073 | Average retail price of midgrade per unit; null where the source does not survey it for this area |
premiumPremium | number | 5.482 | Average retail price of premium per unit; null where the source does not survey it for this area |
dieselPremium | number | 6.382 | Average retail price of No. 2 diesel per unit; null where the source does not survey it for this area |
allGradesPremium | number | 4.603 | Average retail price of all gasoline grades combined per unit; null where the source does not survey it for this area |
lpgPremium | object | null | Average retail price of LPG (autogas) per unit; null where the source does not survey it for this area |
changeDirection | string | "down" | Direction of the weekly change in regular gasoline: up, down or unchanged |
previousWeekPremium | string | "2026-09-21" | Date of the prior survey week used for the weekly change |
weeklyChange | object | {...} | Change in price per unit from the previous survey week, by grade |
regularPremium | number | -0.013 | Week-over-week change in the regular unleaded price, in currency per unit |
midgradePremium | number | 0.012 | Week-over-week change in the midgrade price, in currency per unit |
premiumPremium | number | 0.022 | Week-over-week change in the premium price, in currency per unit |
dieselPremium | number | -0.147 | Week-over-week change in the No. 2 diesel price, in currency per unit |
allGradesPremium | number | -0.007 | Week-over-week change in the all gasoline grades combined price, in currency per unit |
lpgPremium | object | null | Week-over-week change in the LPG (autogas) price, in currency per unit |
yearAgoWeekPremium | string | "2025-09-29" | Date of the survey week one year earlier used for the yearly change |
yearlyChange | object | {...} | Change in price per unit from the same week a year earlier, by grade |
regularPremium | number | 1.347 | Year-over-year change in the regular unleaded price, in currency per unit |
midgradePremium | number | 1.366 | Year-over-year change in the midgrade price, in currency per unit |
premiumPremium | number | 1.415 | Year-over-year change in the premium price, in currency per unit |
dieselPremium | number | 2.628 | Year-over-year change in the No. 2 diesel price, in currency per unit |
allGradesPremium | number | 1.355 | Year-over-year change in the all gasoline grades combined price, in currency per unit |
lpgPremium | object | null | Year-over-year change in the LPG (autogas) price, in currency per unit |
nativeCurrency | string | "USD" | Currency the source publishes in (USD for the US, GBP for the UK, EUR or the local currency in the EU) |
nativeUnit | string | "gallon" | Unit the source publishes in (gallon for the US, liter elsewhere) |
exchangeRate | number | 1 | Rate applied to convert from nativeCurrency to currency; 1 when no conversion was requested |
Errors
Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.
| Status | Meaning | What to do |
|---|---|---|
400 | Input was rejected | Read error; it names the parameter. |
401 | Key missing or invalid | Check the header name and the key value. |
403 | Key valid, but not permitted | A key restriction or IP allow-list; see key scoping. |
429 | Rate limited, or out of credits | Read error to tell them apart; see rate limits. |
Use cases
- Trip Fuel Cost Calculators
- Estimate the fuel cost of a road trip by multiplying route distance and vehicle efficiency by the current price for the country, state or city being driven through.
- Fleet Fuel Budgeting
- Logistics teams forecast monthly fuel spend by tracking weekly diesel prices and the year-over-year change in every country their trucks operate in.
- Delivery Fuel Surcharges
- Couriers and freight brokers tie fuel surcharges to the weekly national diesel average so pricing adjusts automatically as pump prices move.
- Cross-Country Cost Comparisons
- Travel and relocation sites compare what drivers pay across Europe and the US by requesting every country in one currency and per liter.
Other ways to use Gas Prices
Set up Gas Prices on APIVerve, or reach the same source a different way. Your APIVerve account and credits work on all of them — one key, one balance.
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