EV
- 1 distance × kWh / 100 km
- 2 × €/kWh
= EV cost
Methodology
Methodology and sources
A short, honest walk through how Volora turns a kilometre into a number.
01 — How we calculate
How we calculate
Two parallel calculations — one for your EV, one for the petrol or diesel car you would otherwise drive. The difference is your savings.
Thermal
- 1 distance × L / 100 km
- 2 × €/L
= Thermal cost
You save Thermal cost − EV cost
kWh = distance × consumption ÷ 100 · Liters = distance × consumption ÷ 100 · CO₂ EV = kWh × g/kWh ÷ 1000 · CO₂ thermal = liters × kg/L
02 — Where the numbers come from
Where the numbers come from
Country defaults
Documented electricity and fuel prices, plus average grid CO₂ per country. Used by both the web calculator and the app.
Fresher live data
Where supported, the Volora app refreshes prices and grid carbon from official national feeds — currently RTE éCO2mix and prix-carburants.gouv.fr in France, Elia and Statbel in Belgium. The web calculator stays static for speed and privacy.
Your overrides
Every value is editable in the app — electricity price, fuel price, consumption — per trip and per vehicle.
03 — Honest CO₂ estimates
Honest CO₂ estimates
CO₂ figures are usage-based estimates, not a full lifecycle analysis. Reference factors used: roughly 2.7 kg CO₂e per litre of petrol, 3.1 kg per litre of diesel. Grid carbon varies (≈ 55 g/kWh in France, ≈ 380 in Germany, ≈ 250 as a generic fallback).
Real values shift with
- Time of charging and grid mix
- Driving style and weather
- Charger type (home, public, fast)
04 — Privacy at a glance
Privacy at a glance
A short summary — full details on the Privacy page.
- Your vehicle data stays on your device by default
- No tracking, no advertising tags
- Optional cloud backup if you sign in