Factor record · supermini-diesel-km-scope-3-defra-2026last verified 2026-07-31 · DESNZ
0.13461
kgCO2e / km

Travel by car — Supermini (Diesel)

Business travel · Road transport · Passenger car
DEFRA 2026Scope 3*activity based
Select unit
0.07% higher than 2025
0.13452 kgCO2e/km in 2025
GHG Breakdown
CO₂
0.1329
kgCO2e/km
CH₄
0.0000
kgCO2e/km
N₂O
0.0017
kgCO2e/km
Record
Identifier
2a18bf0a8d19
Activity
Travel by car — Supermini (Diesel)
Activity class
Business travel · Road transport · Passenger car
Category
transport
Sub-category
Cars (by market segment)
Market segment
Supermini
Fuel / powertrain
Diesel
Region
GBR · United Kingdom
Value
0.13461 kgCO2e/km
Scope 3 category
Category 6
Methodology
activity based
GWP
AR5 / GWP100
Vintage year
2026
Published
2026
Source reference
Factors by Category sheet, ID 25_300_3005_4_1
Verified
2026-07-31 · DESNZ
Open primary source
Citation
DEFRA 2026, Travel by car — Supermini (Diesel), Factors by Category sheet, ID 25_300_3005_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.

Department for Energy Security and Net Zero · 2026 · Open Government Licence v3.0Back to the library