On a 100 km mixed trip, the BMW 420d is about 65% cheaper than the Porsche 718 Cayman GTS with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.
What each kilometre costs, depending on your driving profile and how you charge. Annual projection and cumulative savings over 10 years.
4,291 €per year
13,2 L/100 km weighted · 28.60 € per 100 km · 1 977 L per year
| Profile | Split | AA · 718 | BB · 420d | Gap |
|---|---|---|---|---|
| City70 / 25 / 5 | 70 % city · 25 % road · 5 % motorway | 5,394 € | 1,666 € | 3,728 € · 420d |
| Mixed30 / 50 / 20 | 30 % city · 50 % road · 20 % motorway | 4,291 € | 1,550 € | 2,740 € · 420d |
| Long-distance10 / 40 / 50 | 10 % city · 40 % road · 50 % motorway | 3,608 € | 1,468 € | 2,140 € · 420d |
Cumulative saving for the 420d
Energy only. Excludes purchase, insurance, servicing, depreciation.
On a 100 km mixed trip, the BMW 420d is about 65% cheaper than the Porsche 718 Cayman GTS 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.