On a 100 km mixed trip, the BMW 840i is about 25% cheaper than the Porsche Panamera 4 with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.
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
prix-carburants.gouv.fr — moyenne nationale du 25/08/2026 ; EDF Tarif Bleu Base au 01/08/2026 ; DC autoroute : moyenne des réseaux sans abonnement
| Profile | Split | 840i | Panamera 4 | Gap | Advantage |
|---|---|---|---|---|---|
| City | 70 % city · 25 % road · 5 % motorway | 2 676 € | 3 266 € | 590 € | 840i |
| Mixed | 30 % city · 50 % road · 20 % motorway | 2 348 € | 3 031 € | 683 € | 840i |
| Long-distance | 10 % city · 40 % road · 50 % motorway | 2 095 € | 2 818 € | 723 € | 840i |
On a 100 km mixed trip, the BMW 840i is about 25% cheaper than the Porsche Panamera 4 with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.
The BMW 840i is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.