Emission factor from OCCC 2025
Passenger cars Diesel - < 1,4 l (Small) · Euro 5 and later · EMISSION FACTOR (g CO2 /
Spain · Combustion · Any year
Value per kilometre driven
0.0961kgCO₂e/km
Biogenic CO₂ and land use excluded · GWP100 · AR6
FossilBio CH₄Land useBio CO₂GHG Protocol and IPCC inventoriesOne value, for any year
OCCC sets no date window, so there is no year to pick.
Reference year 2025
Derived by open-climate.ai
- LoadHow full a lorry, train or ship runs with goods. A passenger factor counts passengers or vehicles, not tonnes, so no load applies.
- Not applicable
- Vehicle sizeThe vehicle's class, by weight or capacity. OCCC does not say which size this factor assumes.
- Not stated
- Distance bandFlights are priced by distance band, because take-off and climb burn a large share of a short flight's fuel. Road, rail and sea factors apply to a trip of any length.
- Any distance, not banded
- Cabin classA business seat takes more of the cabin than an economy one, so it carries more of the flight's emissions. First class on a long-haul flight counts four times economy.
- Not applicable on the road
- Region
- Spain ES
- Boundary
- Combustion
- Data quality
- MediumRated by us, not by the source
- Licence
- Open · OCCC terms
Where 0.0961 comes from
open-climate.ai adds up the gases OCCC publishes, each weighted by its warming potential.
Reporting this kilometre under the GHG Protocol
3.6 Travel 0.0961
A trip for work is business travel, Scope 3, category 6, whoever books it.
The factor, standardised
Every factor on open-climate.ai answers the same questions in the same words, whatever the publisher. Open any ⓘ for the definition.
Transport › Car travel · Spain · per km · Average
Combustion · Excl. biogenic CO₂ · AR6
- BoundaryCombustionDirect emissions from burning the fuel at the point of use, in a boiler, furnace, engine or vehicle (for a vehicle, tank-to-wheel). Learn more
- Combustion
- Fuel combustion
- GWP methodWhich IPCC assessment report's warming potentials convert each gas to CO₂e, and over how many years the warming is counted (GWP100: 100 years). Learn more
- IPCC AR6, 100-year horizon
- Not on the record; set from OCCC's method notes
- CO₂e basisWhich carbon the CO₂e counts. Fossil only leaves out biogenic methane, land-use change and biogenic CO₂; excl. biogenic CO₂ counts biogenic methane but not the other two; net total counts every pool, net of removals. The same activity on two bases is two different numbers. Learn more
- Excl. biogenic CO₂FossilBio CH₄Land useBio CO₂GHG Protocol and IPCC inventories
- Split by gas
Medium quality · Open licence · Any year
What this number covers
The path of one vehicle-kilometre, from the oil well to the end of the trip.
Vehicle operation
Burning the fuel on the road, spread over the average load
Included0.0961Effect at altitude
Contrails and other warming from burning fuel high up. Flights only.
Not applicable on the roadYour trip
1 km driven. The factor is per vehicle-kilometre.
= 0.0961
Outside this boundary
- Upstream fuel (well-to-tank)
- Building the vehicle
- Roads and depots
This factor counts the fuel the vehicle burns, not the vehicle itself or the infrastructure it runs on. Some libraries price building the vehicle as a factor of its own.
Gases in vehicle operation
Basis: Excl. biogenic CO₂Biogenic CO₂ and land-use change are left out; fossil CO₂, the other greenhouse gases and methane from biogenic sources are counted. Learn moreFossilBio CH₄Land useBio CO₂GHG Protocol and IPCC inventories
- Carbon dioxide (CO₂)0.094598.3%
- Nitrous oxide (N₂O)0.001641.7%
- Methane (CH₄)0.00000209
Σ 0.0945 + 0.00000209 + 0.00164 = 0.0961.
Each gas is converted to CO₂e with AR6 100-year warming potentials; biogenic CO₂ and land-use carbon are left out, while methane from biogenic sources is counted.
From OCCC's record to a comparable factor
OCCC publishes the inputs; open-climate.ai computed this value from them. Here is each field as printed and what open-climate.ai made of it.
About this factor
OCCC gives no description for this factor.
Source and licence
- Value
- Computed by open-climate.ai from the gas values in this record
- Publisher
- Oficina Catalana del Canvi Climàtic (Generalitat de Catalunya)
- Published
- 9 June 2026
The values and their metadata are served in full and may be reused with credit to the publisher.
Es permet la reutilització de documents i dades d'acord amb la Llei 37/2007, sempre que no s'alteri el contingut ni les metadades, no se'n desnaturalitzi el sentit, es citi la font i s'indiqui la data de l'última actualització.
Cite this factor
Oficina Catalana del Canvi Climàtic, Generalitat de Catalunya. Guia pràctica per al càlcul d'emissions de gasos amb efecte d'hivernacle (GEH), any 2025, edició 2026. Normalised by open-climate.ai, https://open-climate.ai/factors/libraries/occc_catalonia/ (CC BY 4.0). https://open-climate.ai/factors/ef-occccatalonia-turismes_diesel_14_l-es-km-combustion-bda46dc4/?v=efv1-9f7293198d9d376c878db7af1f8f110b
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