On a 100 km mixed trip, the BMW 420d is about 50% cheaper than the Porsche 718 Cayman 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.
| Profile | Split | AA · 718 | BB · 420d | Gap |
|---|---|---|---|---|
| City70 / 25 / 5 | 70 % city · 25 % road · 5 % motorway | 3,486 € | 1,666 € | 1,820 € · 420d |
| Mixed30 / 50 / 20 | 30 % city · 50 % road · 20 % motorway | 3,236 € | 1,550 € | 1,685 € · 420d |
| Long-distance10 / 40 / 50 | 10 % city · 40 % road · 50 % motorway | 3,008 € | 1,468 € | 1,539 € · 420d |
Cumulative saving for the 420d
Energy only. Excludes purchase, insurance, servicing, depreciation.
On a 100 km mixed trip, the BMW 420d is about 50% cheaper than the Porsche 718 Cayman 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.