Driving & travel
Fuel efficiency payback Calculator
Compare fuel options and recover a more efficient car purchase premium. This free fuel efficiency payback calculator shows the calculation and its assumptions so you can compare your own figures.
Your results
Compare fuel options and recover a more efficient car purchase premium.
Calculated outcomes
- First Annual Fuel Cost
- €2,520.00
- Second Annual Fuel Cost
- €1,750.00
- Fuel Only Break Even Km
- 64,935.06 km
Assumptions and estimates
- Method: Fuel costs use consumption × fuel price × distance. Annual saving deducts second-car extra non-fuel cost; fuel-only distance ignores that cost.
- Enter negative extra annual costs to represent second-car savings. Excludes resale values, financing, emissions levies and future fuel price changes.
Useful next steps
- Check the payback period against how long you will keep the vehicle.
- Use Compare options to test an alternative side by side.
- Copy, print or download a record of this calculation when you need one.
Reports open your email app addressed to s@s1.ie with the public page address only. Your inputs are never added.
How the fuel efficiency payback calculation works
Fuel costs use consumption × fuel price × distance. Annual saving deducts second-car extra non-fuel cost; fuel-only distance ignores that cost.
Enter negative extra annual costs to represent second-car savings. Excludes resale values, financing, emissions levies and future fuel price changes.
Using this calculator
- Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
- Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
- Review annual net saving and simple payback years, then read the stated assumptions and eligibility conditions before using the result.
Worked example
This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.
See example inputs
- Annual distance (km)
- 20000
- First car consumption (L/100 km)
- 7
- First fuel price (€/litre)
- 1.8
- Second car consumption (L/100 km)
- 5
- Second fuel price (€/litre)
- 1.75
- Extra second-car annual non-fuel costs (€)
- 150
- Second-car purchase premium (€)
- 2500
- Annual Net Saving
- €620.00
- Simple Payback Years
- 4.03 years