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, with no manual receipt entry. Emission balances per driver 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.