List Vehicle Fuels

Retrieve all vehicle fuels available in the Dcycle system. Vehicle fuels represent different types of energy sources for vehicles (gasoline, diesel, electric, hybrid, CNG, LPG, etc.) and are used when creating vehicles and tracking fuel consumption.

Vehicle fuels are reference data maintained by Dcycle. You cannot create or modify fuels through the API - this endpoint is read-only.

Request

Headers

x-api-key

string

required

Your API key for authenticationExample: sk_live_1234567890abcdef

x-organization-id

string

required

Your organization UUIDExample: ff4adcc7-8172-45fe-9cf1-e90a6de53aa9

x-user-id

string

required

Your user UUIDExample: a1b2c3d4-e5f6-7890-abcd-ef1234567890

Query Parameters

vehicle_type

string

Filter fuels by vehicle typeValid vehicle types:

passenger_car - Standard passenger cars
light_commercial - Light commercial vehicles (vans, small trucks)
rigid - Rigid trucks
articulated - Articulated trucks (semi-trailers)
motorcycle - Motorcycles and scooters
bus - Buses and coaches

Example: "passenger_car"

country

string

Filter fuels by country using ISO 3166-1 alpha-2 country codeSupported country codes:

ES - Spain (returns Spanish vehicle fuels)
Any other code returns global (GLO) database fuels

Country-specific vehicle fuels are currently only available for Spain (ES). Other countries will receive generic fuels from the global database.

Example: "ES"

Response

Returns an array of vehicle fuel objects (not paginated - all matching fuels are returned).

[]

array

Array of vehicle fuel objects

Vehicle Fuel Object Fields:

string

Unique fuel identifier (UUID v4)

fuel

string

Fuel name (e.g., “Diesel”, “Gasoline”, “Electric”, “Hybrid”, “CNG”, “LPG”)

country

string

ISO 3166-1 alpha-2 country code where fuel data applies (ES or GLO)

vehicle_types

array

Array of vehicle type IDs that can use this fuelOnly included when no vehicle_type filter is applied. When filtering by vehicle_type, this field is omitted.Example: ["passenger_car_id_1", "light_commercial_id_2"]

units

array

Array of available measurement units for this fuelEach unit object contains:

id (string) - Unit UUID
name (string) - Unit name (e.g., “L”, “kWh”, “kg”)
type (string) - Unit type (e.g., “liquid”, “energy”, “solid”)

Example

curl -X GET "https://api.dcycle.io/api/v1/vehicle_fuels?vehicle_type=passenger_car&country=ES" \
  -H "Authorization: Bearer ${DCYCLE_API_KEY}" \
  -H "x-organization-id: ${DCYCLE_ORG_ID}" \
  -H "x-user-id: ${DCYCLE_USER_ID}"

Successful Response (with vehicle_type filter)

[
  {
    "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "fuel": "Diesel",
    "country": "ES",
    "units": [
      {
        "id": "unit-1-uuid",
        "name": "L",
        "type": "liquid"
      },
      {
        "id": "unit-2-uuid",
        "name": "kWh",
        "type": "energy"
      }
    ]
  },
  {
    "id": "b2c3d4e5-f6g7-8901-bcde-fg2345678901",
    "fuel": "Gasoline",
    "country": "ES",
    "units": [
      {
        "id": "unit-3-uuid",
        "name": "L",
        "type": "liquid"
      },
      {
        "id": "unit-4-uuid",
        "name": "kWh",
        "type": "energy"
      }
    ]
  },
  {
    "id": "c3d4e5f6-g7h8-9012-cdef-gh3456789012",
    "fuel": "Electric",
    "country": "ES",
    "units": [
      {
        "id": "unit-5-uuid",
        "name": "kWh",
        "type": "energy"
      }
    ]
  },
  {
    "id": "d4e5f6g7-h8i9-0123-defg-hi4567890123",
    "fuel": "Hybrid",
    "country": "ES",
    "units": [
      {
        "id": "unit-6-uuid",
        "name": "L",
        "type": "liquid"
      },
      {
        "id": "unit-7-uuid",
        "name": "kWh",
        "type": "energy"
      }
    ]
  }
]

Successful Response (without filters)

[
  {
    "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "fuel": "Diesel",
    "country": "GLO",
    "vehicle_types": [
      "passenger_car_id",
      "light_commercial_id",
      "rigid_id",
      "articulated_id"
    ],
    "units": [
      {
        "id": "unit-1-uuid",
        "name": "L",
        "type": "liquid"
      },
      {
        "id": "unit-2-uuid",
        "name": "kWh",
        "type": "energy"
      }
    ]
  },
  {
    "id": "b2c3d4e5-f6g7-8901-bcde-fg2345678901",
    "fuel": "Electric",
    "country": "GLO",
    "vehicle_types": [
      "passenger_car_id",
      "light_commercial_id",
      "bus_id"
    ],
    "units": [
      {
        "id": "unit-3-uuid",
        "name": "kWh",
        "type": "energy"
      }
    ]
  }
]

Common Errors

400 Bad Request - Invalid Vehicle Type

{
  "detail": "Invalid vehicle type",
  "code": "VALIDATION_ERROR"
}

Solution: Use a valid vehicle type from the list above (passenger_car, light_commercial, rigid, articulated, motorcycle, bus).

400 Bad Request - Invalid Country Code

{
  "detail": "Invalid country code format",
  "code": "VALIDATION_ERROR"
}

Solution: Use a valid ISO 3166-1 alpha-2 country code (2 letters).

403 Forbidden

Cause: Organization ID doesn’t match your API key or user doesn’t belong to organization

{
  "detail": "Not authorized",
  "code": "FORBIDDEN"
}

Solution: Verify that x-organization-id matches your API key’s organization.

Use Cases

Get Fuels for Creating Unknown Vehicles

When creating an unknown vehicle, you need the fuel ID:

def create_unknown_vehicle_with_fuel(vehicle_type):
    """Create an unknown vehicle with appropriate fuel"""

    # 1. Get fuels for this vehicle type
    response = requests.get(
        "https://api.dcycle.io/api/v1/vehicle_fuels",
        headers=headers,
        params={
            "vehicle_type": vehicle_type,
            "country": "ES"
        }
    )

    fuels = response.json()

    # 2. Let user select fuel (or default to diesel)
    diesel_fuel = next(
        (f for f in fuels if "Diesel" in f['fuel']),
        fuels[0] if fuels else None
    )

    if not diesel_fuel:
        print("⚠️ No fuels available for this vehicle type")
        return

    # 3. Get unit (liters for liquid fuels)
    liter_unit = next(
        (u for u in diesel_fuel['units'] if u['name'] == 'L'),
        diesel_fuel['units'][0] if diesel_fuel['units'] else None
    )

    # 4. Create unknown vehicle (bulk upload)
    vehicle_data = {
        "name": "Company Van #1",
        "license_plate": "1234-ABC",
        "type": "freight",  # passenger or freight
        "ownership": "owned",
        "country": "ES",
        "is_known": False,  # Unknown vehicle
        "vehicle_fuel_id": diesel_fuel['id'],
        "registration_year": 2020
    }

    print(f"✅ Vehicle configured with {diesel_fuel['fuel']} fuel")
    return vehicle_data

Get All Fuels with Vehicle Types

When you need to know which vehicle types can use each fuel:

def get_fuels_with_compatibility():
    """Get all fuels with vehicle type compatibility info"""

    # Get all fuels without filters to include vehicle_types
    response = requests.get(
        "https://api.dcycle.io/api/v1/vehicle_fuels",
        headers=headers
    )

    fuels = response.json()

    # Display fuel compatibility matrix
    print("Fuel Compatibility Matrix:")
    for fuel in fuels:
        vehicle_types = fuel.get('vehicle_types', [])
        print(f"\n{fuel['fuel']}:")
        print(f"  Country: {fuel['country']}")
        print(f"  Compatible with {len(vehicle_types)} vehicle types")
        print(f"  Available units: {', '.join([u['name'] for u in fuel['units']])}")

    return fuels

Filter Fuels by Type

Organize fuels for a UI selector:

def get_fuels_by_category(vehicle_type, country="ES"):
    """Get fuels organized by category"""

    response = requests.get(
        "https://api.dcycle.io/api/v1/vehicle_fuels",
        headers=headers,
        params={
            "vehicle_type": vehicle_type,
            "country": country
        }
    )

    fuels = response.json()

    # Categorize fuels
    categories = {
        "fossil": [],
        "alternative": [],
        "electric": []
    }

    for fuel in fuels:
        fuel_name = fuel['fuel'].lower()

        if 'electric' in fuel_name or 'battery' in fuel_name:
            categories['electric'].append(fuel)
        elif any(alt in fuel_name for alt in ['cng', 'lng', 'lpg', 'hydrogen', 'hybrid']):
            categories['alternative'].append(fuel)
        else:
            categories['fossil'].append(fuel)

    return categories

# Usage
fuels = get_fuels_by_category("passenger_car", "ES")

print("Fossil Fuels:")
for f in fuels['fossil']:
    print(f"  - {f['fuel']}")

print("\nAlternative Fuels:")
for f in fuels['alternative']:
    print(f"  - {f['fuel']}")

print("\nElectric:")
for f in fuels['electric']:
    print(f"  - {f['fuel']}")

Cache Vehicle Fuels

Since vehicle fuels don’t change frequently, cache them:

from datetime import datetime, timedelta

class DcycleVehicleFuelsCache:
    def __init__(self, api_key, org_id, user_id):
        self.headers = {
            "Authorization": f"Bearer {api_key}",
            "x-organization-id": org_id,
            "x-user-id": user_id
        }
        self._cache = {}
        self._cache_time = {}
        self.cache_duration = timedelta(hours=24)

    def get_fuels(self, vehicle_type=None, country=None):
        """Get vehicle fuels with caching"""

        cache_key = f"{vehicle_type or 'all'}_{country or 'all'}"

        # Check if cache is valid
        if (cache_key not in self._cache_time or
            datetime.now() - self._cache_time[cache_key] > self.cache_duration):
            self._refresh_cache(vehicle_type, country)

        return self._cache.get(cache_key, [])

    def _refresh_cache(self, vehicle_type=None, country=None):
        """Refresh the cache"""

        params = {}
        if vehicle_type:
            params["vehicle_type"] = vehicle_type
        if country:
            params["country"] = country

        response = requests.get(
            "https://api.dcycle.io/api/v1/vehicle_fuels",
            headers=self.headers,
            params=params
        )

        fuels = response.json()

        cache_key = f"{vehicle_type or 'all'}_{country or 'all'}"
        self._cache[cache_key] = fuels
        self._cache_time[cache_key] = datetime.now()

        print(f"✅ Vehicle fuels cache refreshed for '{cache_key}': {len(fuels)} fuels")

    def get_fuel_by_id(self, fuel_id, vehicle_type=None, country=None):
        """Get a specific fuel by ID"""

        fuels = self.get_fuels(vehicle_type, country)

        for fuel in fuels:
            if fuel['id'] == fuel_id:
                return fuel

        return None

    def get_fuel_by_name(self, name, vehicle_type=None, country=None):
        """Get a fuel by name (case-insensitive)"""

        fuels = self.get_fuels(vehicle_type, country)

        for fuel in fuels:
            if name.lower() in fuel['fuel'].lower():
                return fuel

        return None

# Usage
cache = DcycleVehicleFuelsCache(
    api_key=os.getenv("DCYCLE_API_KEY"),
    org_id=os.getenv("DCYCLE_ORG_ID"),
    user_id=os.getenv("DCYCLE_USER_ID")
)

# Get fuels for passenger cars
diesel = cache.get_fuel_by_name("Diesel", "passenger_car", "ES")
electric = cache.get_fuel_by_name("Electric", "passenger_car", "ES")

Validate Fuel for Vehicle Type

Ensure a fuel is compatible with a vehicle type:

def validate_fuel_for_vehicle_type(fuel_id, vehicle_type, country="ES"):
    """Validate that a fuel is compatible with a vehicle type"""

    # Get fuels for this vehicle type
    response = requests.get(
        "https://api.dcycle.io/api/v1/vehicle_fuels",
        headers=headers,
        params={
            "vehicle_type": vehicle_type,
            "country": country
        }
    )

    fuels = response.json()

    # Check if fuel is in the list
    fuel_ids = [f['id'] for f in fuels]

    if fuel_id not in fuel_ids:
        available_fuels = [f['fuel'] for f in fuels]
        raise ValueError(
            f"Fuel {fuel_id} is not compatible with vehicle type '{vehicle_type}'. "
            f"Available fuels: {', '.join(available_fuels)}"
        )

    return True

# Usage
try:
    validate_fuel_for_vehicle_type(
        fuel_id="diesel-fuel-uuid",
        vehicle_type="passenger_car",
        country="ES"
    )
    print("✅ Fuel is compatible")
except ValueError as e:
    print(f"❌ Validation error: {e}")

Vehicle Types

The vehicle_type parameter accepts these values:

Type	Description	Common Fuels
`passenger_car`	Standard passenger cars	Gasoline, Diesel, Electric, Hybrid, CNG
`light_commercial`	Vans and small trucks	Diesel, Gasoline, Electric, CNG
`rigid`	Rigid trucks	Diesel, CNG, LNG
`articulated`	Semi-trailers and articulated trucks	Diesel, LNG
`motorcycle`	Motorcycles and scooters	Gasoline, Electric
`bus`	Buses and coaches	Diesel, CNG, Electric, Hybrid

Fuel Types

Common vehicle fuel types in the system:

Fossil Fuels

Diesel - Most common for commercial vehicles
Gasoline (Petrol) - Standard passenger car fuel
LPG (Liquefied Petroleum Gas) - Alternative fuel for cars and vans

Alternative Fuels

CNG (Compressed Natural Gas) - Cleaner alternative for trucks and buses
LNG (Liquefied Natural Gas) - For heavy-duty trucks
Biodiesel - Renewable diesel alternative
Bioethanol - Renewable gasoline alternative

Electric & Hybrid

Electric - Battery electric vehicles (BEV)
Hybrid - Combined electric and combustion
Plug-in Hybrid - Rechargeable hybrid vehicles

Units per Fuel

Each fuel has specific units for measuring consumption:

Liquid Fuels (Diesel, Gasoline, LPG liquid)

L (liters) - Standard volume measurement
kWh - Energy content
kg - Mass measurement (for some fuels)

Gaseous Fuels (CNG, LNG)

kg - Mass measurement (most common)
m³ - Volume measurement
kWh - Energy content

Electric

kWh - Electricity consumption (only unit)

Always check the units array for each fuel to see which units are available. Using an incompatible unit will result in an error when creating vehicles or invoices.

Country-Specific Behavior

Spain (ES)

Spain has country-specific emission factors for vehicle fuels based on:

National fuel composition standards
Regional grid mix for electric vehicles
Fuel production and distribution emissions

Global (GLO)

For countries other than Spain, the system returns global emission factors based on:

IPCC guidelines
GHG Protocol standards
International fuel standards

If you need country-specific vehicle fuels beyond Spain, contact Dcycle support. We’re continuously expanding our fuel databases.

Best Practices

1. Cache Reference Data

Vehicle fuels don’t change frequently, so cache them:

# Good - Cache for 24 hours
fuels_cache = cache.get_fuels("passenger_car", "ES")

# Bad - Fetch every time
fuels = requests.get(f"https://api.dcycle.io/api/v1/vehicle_fuels?vehicle_type=passenger_car")

2. Filter by Vehicle Type

Always filter by vehicle type when creating vehicles:

# Good - Only fetch relevant fuels
passenger_fuels = get_fuels(vehicle_type="passenger_car", country="ES")

# Less efficient - Fetch all and filter client-side
all_fuels = get_fuels()
passenger_fuels = [f for f in all_fuels if 'passenger_car' in f.get('vehicle_types', [])]

3. Validate Unit Before Use

Check that the unit is available for the selected fuel:

def validate_unit_for_fuel(fuel_id, unit_id):
    fuel = cache.get_fuel_by_id(fuel_id)
    unit_ids = [u['id'] for u in fuel['units']]

    if unit_id not in unit_ids:
        raise ValueError(f"Invalid unit for fuel '{fuel['fuel']}'")

    return True

4. Store Common Fuel IDs

For frequently used fuels, store their IDs:

# config.py
COMMON_VEHICLE_FUELS_ES = {
    'diesel': 'a1b2c3d4-e5f6-7890-abcd-ef1234567890',
    'gasoline': 'b2c3d4e5-f6g7-8901-bcde-fg2345678901',
    'electric': 'c3d4e5f6-g7h8-9012-cdef-gh3456789012'
}

# Usage - No API call needed
vehicle_data = {
    "vehicle_fuel_id": COMMON_VEHICLE_FUELS_ES['diesel'],
    # ... other fields
}

Bulk Upload Vehicles

Upload vehicles with fuel IDs

List Vehicles

View your vehicle fleet

List Units

Get measurement units

Authentication

Learn about API authentication

Introduction

Logistics

Facilities

Vehicles

Invoices

Purchases

Wastes

Reference Data

Custom Emission Factors

Custom Emission Groups

​List Vehicle Fuels

​Request

​Headers

​Query Parameters

​Response

​Vehicle Fuel Object Fields:

​Example

​Successful Response (with vehicle_type filter)

​Successful Response (without filters)

​Common Errors

​400 Bad Request - Invalid Vehicle Type

​400 Bad Request - Invalid Country Code

​403 Forbidden

​Use Cases

​Get Fuels for Creating Unknown Vehicles

​Get All Fuels with Vehicle Types

​Filter Fuels by Type

​Cache Vehicle Fuels

​Validate Fuel for Vehicle Type

​Vehicle Types

​Fuel Types

​Fossil Fuels

​Alternative Fuels

​Electric & Hybrid

​Units per Fuel

​Liquid Fuels (Diesel, Gasoline, LPG liquid)

​Gaseous Fuels (CNG, LNG)

​Electric

​Country-Specific Behavior

​Spain (ES)

​Global (GLO)

​Best Practices

​1. Cache Reference Data

​2. Filter by Vehicle Type

​3. Validate Unit Before Use

​4. Store Common Fuel IDs

​Related Endpoints

Bulk Upload Vehicles

List Vehicles

List Units

Authentication

List Vehicle Fuels

Request

Headers

Query Parameters

Response

Vehicle Fuel Object Fields:

Example

Successful Response (with vehicle_type filter)

Successful Response (without filters)

Common Errors

400 Bad Request - Invalid Vehicle Type

400 Bad Request - Invalid Country Code

403 Forbidden

Use Cases

Get Fuels for Creating Unknown Vehicles

Get All Fuels with Vehicle Types

Filter Fuels by Type

Cache Vehicle Fuels

Validate Fuel for Vehicle Type

Vehicle Types

Fuel Types

Fossil Fuels

Alternative Fuels

Electric & Hybrid

Units per Fuel

Liquid Fuels (Diesel, Gasoline, LPG liquid)

Gaseous Fuels (CNG, LNG)

Electric

Country-Specific Behavior

Spain (ES)

Global (GLO)

Best Practices

1. Cache Reference Data

2. Filter by Vehicle Type

3. Validate Unit Before Use

4. Store Common Fuel IDs

Related Endpoints