Factor record · small-car-unknown-miles-scope-3-defra-2026last verified 2026-07-31 · DESNZ
0.22986
kgCO2e / miles
Travel by car — Small car
Business travel · Road transport · Passenger car
Fuel / powertrain
Use this average value when the car’s fuel or powertrain is not known.
Vintage
Select unit
0.27% lower than 2025
0.23049 kgCO2e/miles in 2025
GHG Breakdown
CO₂
0.2282
kgCO2e/miles
CH₄
0.0004
kgCO2e/miles
N₂O
0.0012
kgCO2e/miles
Record
- Identifier
- 68a4d71e2818
- Activity
- Travel by car — Small car
- Activity class
- Business travel · Road transport · Passenger car
- Category
- transport
- Sub-category
- Cars (by size)
- Vehicle size
- Small car
- Fuel / powertrain
- Average / unknown
- Region
- GBR · United Kingdom
- Value
- 0.22986 kgCO2e/miles
- Scope
- Scope 3*
- Scope 3 category
- Category 6
- Methodology
- activity based
- GWP
- AR5 / GWP100
- Vintage year
- 2026
- Published
- 2026
- Source reference
- Factors by Category sheet, ID 25_301_3050_9_1
- License
- Open Government Licence v3.0
- Verified
- 2026-07-31 · DESNZ
Citation
DEFRA 2026, Travel by car — Small car, Factors by Category sheet, ID 25_301_3050_9_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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