On a 100 km mixed trip, the BMW 420d is about 55% cheaper than the BMW M4 Coupe 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 | M4 | 420d | Gap | Advantage |
|---|---|---|---|---|---|
| City | 70 % city · 25 % road · 5 % motorway | 3 580 € | 1 575 € | 2 005 € | 420d |
| Mixed | 30 % city · 50 % road · 20 % motorway | 3 190 € | 1 466 € | 1 724 € | 420d |
| Long-distance | 10 % city · 40 % road · 50 % motorway | 2 885 € | 1 388 € | 1 497 € | 420d |
On a 100 km mixed trip, the BMW 420d is about 55% cheaper than the BMW M4 Coupe with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.
The BMW 420d is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.