Factor record · medium-car-diesel-km-scope-3-defra-2026last verified 2026-07-31 · DESNZ
0.17209
kgCO2e / km
Travel by car — Medium car (Diesel)
Business travel · Road transport · Passenger car
Vintage
Select unit
0.2% higher than 2025
0.17174 kgCO2e/km in 2025
GHG Breakdown
CO₂
0.1704
kgCO2e/km
CH₄
0.0000
kgCO2e/km
N₂O
0.0017
kgCO2e/km
Record
- Identifier
- 9388ce3b23fe
- Activity
- Travel by car — Medium car (Diesel)
- Activity class
- Business travel · Road transport · Passenger car
- Category
- transport
- Sub-category
- Cars (by size)
- Vehicle size
- Medium car
- Fuel / powertrain
- Diesel
- Region
- GBR · United Kingdom
- Value
- 0.17209 kgCO2e/km
- 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_3053_4_1
- License
- Open Government Licence v3.0
- Verified
- 2026-07-31 · DESNZ
Citation
DEFRA 2026, Travel by car — Medium car (Diesel), Factors by Category sheet, ID 25_301_3053_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.
Related records
Browse full libraryDepartment for Energy Security and Net Zero · 2026 · Open Government Licence v3.0Back to the library