Factor record · average-car-unknown-km-scope-3-defra-2025last verified 2025-06-10 · DESNZ
0.16725
kgCO2e / km
Historical vintage · Current: DEFRA 2026Travel by car — Average car (Unknown)
Business travel · Road transport · Passenger car
Vintage
Select unit
GHG Breakdown
CO₂
0.1661
kgCO2e/km
CH₄
0.0002
kgCO2e/km
N₂O
0.0010
kgCO2e/km
Record
- Identifier
- hBSOAwSHFhbB
- Activity
- Travel by car — Average car (Unknown)
- Activity class
- Business travel · Road transport · Passenger car
- Category
- transport
- Sub-category
- Cars (by size)
- Vehicle size
- Average car
- Fuel / powertrain
- Unknown
- Region
- GBR · United Kingdom
- Value
- 0.16725 kgCO2e/km
- Scope
- Scope 3*
- Scope 3 category
- Category 6
- Methodology
- activity based
- GWP
- AR5 / GWP100
- Vintage year
- 2025
- Published
- 2025
- Source reference
- Factors by Category sheet, ID 25_301_3074_4_1
- License
- Open Government Licence v3.0
- Verified
- 2025-06-10 · DESNZ
Citation
DEFRA 2025, Travel by car — Average car (Unknown), Factors by Category sheet, ID 25_301_3074_4_1
Methodology
Derived from direct physical activity measurements (litres, kilometres, kilograms). The most accurate approach where activity data exists.
Notes
* Scope 3 boundary · Use this factor for Scope 3 Category 6 passenger road journeys undertaken for business in vehicles outside the reporting organisation’s ownership or control. Choose the car, motorbike, bus, coach, or taxi record and unit that match the travel data available. Separate factors apply to employee commuting, owned or controlled vehicles, freight transport, rail travel, and upstream well-to-tank emissions.
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