BMWPetrolMost economical
840i Convertible G15
Annual energy cost · 15 000 km
2 409€
16,06 € / 100 km
Equivalent to 1 185 L of petrol 95 per year
- Weighted consumption
- 7,9 L/100km
- Fuel price
- 2,03 €/L
- Fuel used
- 1185,0 L per year
Consumption comparison
Same car, two powertrains. The simulator below calculates the gap based on your mileage and charging type.
Annual mileage
15 000 km/an
Simulated driving mix
Drag anywhere on the bar to adjust
Fuel price
Petrol 95 : 2,03 €/L·Diesel : 2,25 €/L
Typical annual usage : Mix 30% city / 50% road / 20% motorway
Annual energy cost · 15 000 km
16,06 € / 100 km
Equivalent to 1 185 L of petrol 95 per year
Annual energy cost · 15 000 km
19,87 € / 100 km
Equivalent to 1 466 L of petrol 95 per year
BMW 840i Convertible G15 costs 571 €/an less in energy than Porsche Cayman 981, over 15 000 km for this driving mix.
≈ 281 L of petrol 95 saved per year
Cumulative projection by annual mileage. The cheaper-to-run vehicle widens the gap year after year.
1 year
571 €
≈ 281 L petrol 95
3 years
1 714 €
≈ 843 L petrol 95
5 years
2 856 €
≈ 1405 L petrol 95
10 years
5 713 €
≈ 2810 L petrol 95
Cumulative savings for BMW 840i Convertible G15 versus Porsche Cayman 981. Excluding purchase, insurance, maintenance and depreciation.
Projection over 15 000 km/year.
| Fuel | km/year | €/km | Annual cost |
|---|---|---|---|
| Annual fuel2,03 €/L | 15 000 km | 0,161 €/km | 2 409 € |
| Fuel | km/year | €/km | Annual cost |
|---|---|---|---|
| Annual fuel2,03 €/L | 15 000 km | 0,199 €/km | 2 980 € |
On a 100 km mixed trip, the BMW 840i Convertible is about 20% cheaper than the Porsche Cayman with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.
The BMW 840i Convertible is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.