Price corridor
EUR55-65/t CO2
The Federal Environment Agency describes 2026 as a transition year with national emissions trading auctions.
CO2 price 2026
CO2 price 2026: calculate petrol and diesel cost
In 2026, Germany's national emissions trading system moves from fixed pricing to auctions with a corridor of EUR55 to EUR65 per tonne of CO2. For drivers, this cost is embedded in fuel prices because companies placing petrol and diesel on the market need certificates. The calculator shows the estimated CO2 component for your monthly fuel use.
Calculate CO2 fuel cost
In 2026, Germany's national price corridor is EUR55 to EUR65 per tonne of CO2.
CO2 cost per month
€15.38
CO2 cost per year
€184.54
Calculation uses approx. 2.33 kg CO2/L petrol and 2.65 kg CO2/L diesel.
Petrol
about 2.33 kg CO2/L
Each litre of petrol emits about 2.33 kg CO2 when burned, creating the estimated CO2 cost component.
Diesel
about 2.65 kg CO2/L
Diesel contains more carbon per litre, so its CO2 component is higher than petrol.
Why the CO2 price reaches the pump
The CO2 price is not shown as a separate line on a fuel receipt. It is part of the cost structure for companies placing fossil fuels on the market. The higher the certificate price, the more pressure it can add to petrol and diesel prices. In 2026 the corridor is still limited; under EU-ETS 2, price formation becomes more European and market-based.
Energy tax, VAT, crude oil, exchange rates, refinery margins, competition and time of day also matter. Use this calculator for the CO2 component, then use live search for the real station price.