BMWPetrolMost economical
840i xDrive Convertible G15
Annual energy cost · 15 000 km
2 507€
16,72 € / 100 km
Equivalent to 1 260 L of petrol 95 per year
- Weighted consumption
- 8,4 L/100km
- Fuel price
- 1,99 €/L
- Fuel used
- 1260,0 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 : 1,99 €/L·Diesel : 1,75 €/L
Typical annual usage : Mix 30% city / 50% road / 20% motorway
Annual energy cost · 15 000 km
16,72 € / 100 km
Equivalent to 1 260 L of petrol 95 per year
Annual energy cost · 15 000 km
25,59 € / 100 km
Equivalent to 1 929 L of petrol 95 per year
BMW 840i xDrive Convertible G15 costs 1 331 €/an less in energy than Porsche Boxster S 981, over 15 000 km for this driving mix.
≈ 669 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
1 331 €
≈ 669 L petrol 95
3 years
3 993 €
≈ 2007 L petrol 95
5 years
6 656 €
≈ 3345 L petrol 95
10 years
13 311 €
≈ 6689 L petrol 95
Cumulative savings for BMW 840i xDrive Convertible G15 versus Porsche Boxster S 981. Excluding purchase, insurance, maintenance and depreciation.
Projection over 15 000 km/year.
| Fuel | km/year | €/km | Annual cost |
|---|---|---|---|
| Annual fuel1,99 €/L | 15 000 km | 0,167 €/km | 2 507 € |
| Fuel | km/year | €/km | Annual cost |
|---|---|---|---|
| Annual fuel1,99 €/L | 15 000 km | 0,256 €/km | 3 839 € |
On a 100 km mixed trip, the BMW 840i xDrive Convertible is about 35% cheaper than the Porsche Boxster S with default parameters. This ratio shifts with your actual energy prices — simulate for your profile.
The BMW 840i xDrive Convertible is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.