Scenario A · 10% HVO blend in diesel fleet
Realistic without changing vehicles — many stations now offer HVO as an add-in.
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Fleet Calculator · CO₂
CO₂ Quick Calculator for Your Fleet
Calculate your fleet’s Scope 1 emissions per DIN EN 16258 — and see instantly how much a 10% HVO blend, a 25% EV switch, or a complete HVO-100 conversion of the diesel fleet would save.
Result: Scope 1 emissions of your fleet
CO₂ emissions per year
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Breakdown by fuel type
| Fuel | Vehicles | Consumption / year | CO₂ / year |
|---|---|---|---|
| Diesel | — | — | — |
| Gasoline | — | — | — |
| HVO 100 | — | — | — |
| Electric (BEV) | — | — | — |
Reduction scenarios
Scenario B · 25% combustion replaced by EVs
Achievable in the next leasing cycle. Net of grid emissions.
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Scenario C · Diesel fleet fully on HVO 100
Fastest reduction — no vehicle CapEx, just a fuel switch. Verify HVO station availability.
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CSRD note
From reporting year 2026 the EU CSRD requires all companies with > 250 employees, > €50m revenue or > €25m total assets to publish a sustainability report. Scope 1 vehicle emissions are a mandatory data point — and fuel-card receipts are the clean source.
Modelling based on standard emission factors. For CSRD-compliant reporting please align with certified accounting standards (GHG Protocol, DIN EN 16258) and your auditor.
Methodology and assumptions
The calculator computes Tank-to-Wheel (TTW) emissions — CO₂ released when burning the fuel. WTW (Well-to-Wheel incl. upstream chain) is typically 18–20% higher and is common in extended reporting; for an internal quick check TTW is sufficient.
Emission factors (defaults)
- Diesel: 2.67 kg CO₂/L (DIN EN 16258, Tank-to-Wheel).
- Gasoline Super E5: 2.32 kg CO₂/L. Super E10 ~2.28 kg/L due to bio-ethanol blend.
- HVO 100: ~0.40 kg CO₂/L — ~89% GHG reduction vs. fossil diesel (ISCC-certified residues).
- Grid mix Germany 2024: 0.380 kg CO₂/kWh (Federal Environment Agency). Significantly lower with certified green-power contracts.
Scope 1 vs. Scope 2 vs. Scope 3
Direct combustion in the vehicle = Scope 1. Grid electricity for BEVs = Scope 2 (purchased energy). The WTT upstream chain (extraction, refining, logistics) sits in Scope 3. This calculator combines Scope 1 + Scope 2 for BEVs — the typical fleet-manager view.
How DKV InstantFuel helps
Every fueling event is logged digitally with date, station, litres and fuel type — no manual receipt entry. Emission balances per vehicle, cost centre or location can be produced in minutes instead of days. Important for ESG/CSRD: traceable data source with audit trail.
Sources
- DIN EN 16258:2013 — method for the calculation and declaration of energy use and GHG emissions of transport services.
- Federal Environment Agency: CO₂ emission factor for German grid mix, 2024.
- DIN EN 15940 / Neste „HVO 100 Carbon Footprint“ — life-cycle analysis of paraffinic diesel fuels.
- EU CSRD (Directive 2022/2464) — reporting requirements from fiscal year 2026.