PorschePetrol
Cayman GT4
385 ch · 2016
Trip mapped at a glance. Charging stops visible, total duration predictable. Caralogy simulation at 130 km/h.
| Measure | Cayman GT4 | 218i Convertible F22 | Gap |
|---|---|---|---|
| Total time | 7h36 | 7h01 | 35 min · 218i Convertible F22 |
| Charging stops | 7 stops | 0 stops | 7 stops · 218i Convertible F22 |
| Cost of energy used | 210.13 € | 94.18 € | 115.95 € · 218i Convertible F22 |
Both vehicles drove at 130 km/h for the entire trip. The gap is built at the stops: no stop for the 218i Convertible F22 versus 7 stops totalling 35 min for the Cayman GT4.
The official WLTP figures (11,9 L/100km for Cayman GT4 and 6,5 L/100km for 218i Convertible F22) are measured on a mixed cycle averaging ~46 km/h. At a steady 130 km/h, aerodynamic drag weighs much more heavily - it grows with the square of speed. Caralogy calculates a motorway consumption specific to each vehicle based on its aerodynamic profile (SCx), weight and power curve - not a uniform correction factor. For this trip, the simulation yields 12,5 L/100km (Cayman GT4) and 5,6 L/100km (218i Convertible F22). Full methodology: see the assumptions below the controls.
| Segment | Energy used | Distance | Consumption | €/km | Cost (€) |
|---|---|---|---|---|---|
| Paris → Auxerre, A6 | fuel · 2.17 €/L | 103 km | 13 L consumed | 0.270 €/km | 27.85 € |
| Auxerre, A6 → Beaune, A6 | fuel · 2.17 €/L | 103 km | 13 L consumed | 0.270 €/km | 27.85 € |
| Beaune, A6 → Tournus, A6 | fuel · 2.17 €/L | 103 km | 13 L consumed | 0.270 €/km | 27.85 € |
| Tournus, A6 → Limonest, A6 | fuel · 2.17 €/L | 103 km | 13 L consumed | 0.270 €/km | 27.85 € |
| Limonest, A6 → Valence, A7 | fuel · 2.17 €/L | 103 km | 13 L consumed | 0.270 €/km | 27.85 € |
| Valence, A7 → Montélimar, A7 | fuel · 2.17 €/L | 103 km | 13 L consumed | 0.270 €/km | 27.85 € |
| Montélimar, A7 → Manosque, A51 | fuel · 2.17 €/L | 103 km | 13 L consumed | 0.270 €/km | 27.85 € |
| Manosque, A51 → Marseille | fuel · 2.17 €/L | 56 km | 7 L consumed | 0.271 €/km | 15.19 € |
| Trip total | 210.13 € |
| Segment | Energy used | Distance | Consumption | €/km | Cost (€) |
|---|---|---|---|---|---|
| Paris → Marseille | fuel · 2.17 €/L | 775 km | 43 L consumed | 0.122 €/km | 94.18 € |
| Trip total | 94.18 € |
Replace one of the two with an alternative from the same segment
385 ch · 2016
136 ch · 2018
On Paris → Marseille (775 km at 130 km/h), the 218i Convertible F22 arrives in 7h01 with 0 fuel stops.
WLTP consumption does not reflect motorway reality. Aerodynamic drag grows with the square of speed, so real consumption is 15 to 25 % higher than WLTP combined. Caralogy calculates a highway consumption specific to each vehicle based on its aerodynamic profile (SCx), weight and power curve.
Total time = driving time + charging time. Driving time is calculated at an average speed of 130 km/h on the motorway (adjustable). Charging time is calculated based on the real power curve of each vehicle, respecting the optimal 10 → 80 % range and the maximum power accepted by the chargers on the route.
No. The displayed cost covers only the energy consumed during the trip: kWh × energy rate, with a mix of home charging and DC fast chargers. Battery wear is a long-term ownership cost, not a trip cost.
On this trip, the energy used costs 210.13 € (Cayman GT4) and 94.18 € (218i Convertible F22). For reference, an equivalent BMW M340i (~9.5 L/100 km) would cost about 136 € in fuel.