Your fuel, in numbers.
Five answers. One net gain. Tested the way a bank would.
Example
CHF 8,200
Net gain per year
- Profile
- SME and fleet
- Fuel
- Diesel · 1.90
- Consumption
- 100,000 L
- NTROPYX
- 7 cents
- Rate tested
- 8%
Calculate your saving.
Net gain per yearCHF —
DetailsDetailed analysis. The same answers, read by a finance department, a bank or a fleet manager.
Answer the five questions to open the detailed analysis.
By period.Week, month and year, side by side.
| Value | Week | Month | Year |
|---|---|---|---|
| Fuel saved | |||
| Value of the fuel saved | |||
| NTROPYX price | |||
| Net gain |
Scenarios.Your rate, framed by three markers.
Break-even
Pessimistic
Your rate
Optimistic, test bench
Pessimistic: half your rate. Optimistic: 15%, measured on the test bench (Scania −15.2%, Caterpillar −15.0%). Break-even: below this rate, NTROPYX costs more than it saves.
Finance.Multi-year projection, discounted.
Fill in the horizon, the discount rate and the annual increase to see the projection.
Internal rate of return (IRR)
| Year | Net gain | Discounted gain | Cumulative |
|---|
Risk.Net gain per year if the rate or the fuel price changes.
lossgainOutlined: your answers.
Report.For a credit file or a committee.
The report includes your answers, every table above and the sources. The link keeps all your answers.
Exact dose. For the station, to the millilitre.
NTROPYX dose
— mL
Enter the litres of fuel.
Method and sources. Where every number comes from.
- Fuel saved
- litres per year × rate tested
- Net gain
- value saved − NTROPYX price
- Value saved
- fuel saved × price per litre
- Break-even
- NTROPYX price per litre ÷ fuel price
- NTROPYX price
- litres per year × price per litre treated, excl. VAT
- Avoided CO2
- fuel saved × FOEN factor for the fuel
- Net present value
- sum of each year's net gain, brought back to today
- Internal rate of return
- rate at which the NPV is zero, start-up spend included
- Measured ratesTest bench: specific fuel consumption −15.2% (Scania, road) and −15.0% (Caterpillar, marine).
See the evidence - CO2 factorsSwiss Federal Office for the Environment (FOEN), CO2 emission factors from Switzerland's greenhouse gas inventory, January 2026, table 1.
Read the FOEN factsheet (PDF, French) - Your numbersVolume, fuel price, NTROPYX price and rate come from your answers. Only the CO2 factors (FOEN) and the 15% marker (test bench) come from elsewhere, with sources cited.
Run simulator, dosing and road-test workflows from one app.
Use the web app immediately, or download the current NTROPYX application package for local review.