On a 100 km mixed trip, the BMW 420i Convertible is about 40% cheaper than the Porsche 911 Carrera 4 with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.
Same car, two powertrains. The simulator below calculates the gap based on your mileage and charging type.
3,147 €per year
10,3 L/100 km weighted · 20.98 € per 100 km · 1 548 L per year
| Profile | Split | 911 | 420i | Gap |
|---|---|---|---|---|
| City | 70 % city · 25 % road · 5 % motorway | 3,425 € | 2,127 € | 1,298 € · 420i |
| Mixed | 30 % city · 50 % road · 20 % motorway | 3,147 € | 1,936 € | 1,211 € · 420i |
| Long-distance | 10 % city · 40 % road · 50 % motorway | 2,885 € | 1,793 € | 1,092 € · 420i |
Cumulative saving for the 420i Convertible
Energy only. Excludes purchase, insurance, servicing, depreciation.
On a 100 km mixed trip, the BMW 420i Convertible is about 40% cheaper than the Porsche 911 Carrera 4 with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.
The BMW 420i Convertible is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.