PorschePetrol
718 Cayman
300 ch · 2018
Motorway range comparison
Trip mapped at a glance. Charging stops visible, total duration predictable. Caralogy simulation at 130 km/h.
Paris → Marseille · 130 km/h · Caralogy simulation
| 718 Cayman | Dolphin Boost 150kW | |
|---|---|---|
| Total time | 7h21−34 min | 7h55 |
| Charging stops | 4 stops | 3 stops−1 stop |
| Total cost | 431,83 € | 42,12 €−389,71 € |
Both vehicles drive at 130 km/h. The difference comes from charging stops.
Analysis
Both vehicles drove at 130 km/h for the entire trip. The 718 Cayman (combustion) makes 4 stops totalling 20 min, the Dolphin Boost 150kW (electric) 3 stops totalling 54 min. Road safety reminder: on a trip of this duration, it is recommended to stop for at least 51 min total (17 min every 2h). The energy cost is 431,83 € for 718 Cayman versus 42,12 € for Dolphin Boost 150kW.
The official WLTP figures (9,8 L/100km for 718 Cayman and 14,5 kWh/100km for Dolphin Boost 150kW) 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 28,0 L/100km (718 Cayman) and 15,7 kWh/100km (Dolphin Boost 150kW). Full methodology: see the dedicated button above the summary.
On a 200 km round trip (e.g. a weekend getaway), the electric or plug-in hybrid vehicle completes the entire journey on home energy at 0.18 €/kWh — with no charging stop. The time advantage of the combustion car on long-distance motorways disappears entirely, and the economic advantage of electric strengthens considerably.
The cost per kilometre depends on the electricity rate applied to each segment — based on the energy source used at that point of the trip.
| Segment | Distance | €/km | Cost |
|---|---|---|---|
| Paris → Auxerre, A6fuel · 1,99 €/L | 174 km49 L consumed | 0,557 €/km | 96,95 € |
| Auxerre, A6 → Tournus, A6fuel · 1,99 €/L | 174 km49 L consumed | 0,557 €/km | 96,95 € |
| Tournus, A6 → Valence, A7fuel · 1,99 €/L | 174 km49 L consumed | 0,557 €/km | 96,95 € |
| Valence, A7 → Manosque, A51fuel · 1,99 €/L | 174 km49 L consumed | 0,557 €/km | 96,95 € |
| Manosque, A51 → Marseillefuel · 1,99 €/L | 79 km22 L consumed | 0,557 €/km | 44,03 € |
| Trip total | 431,83 € | ||
| Segment | Distance | €/km | Cost |
|---|---|---|---|
| Paris → Tournus, A6initial energy charged at home · 0,21 €/kWh | 335 km53 kWh consumed | 0,033 €/km | 11,06 € |
| Tournus, A6 → Valence, A7energy charged at Ionity 83 kW · 0,45 €/kWh | 149 km23 kWh consumed | 0,071 €/km | 10,53 € |
| Valence, A7 → Montélimar, A7energy charged at Ionity 83 kW · 0,45 €/kWh | 149 km23 kWh consumed | 0,071 €/km | 10,53 € |
| Montélimar, A7 → Marseilleenergy charged at Ionity 81 kW · 0,45 €/kWh | 142 km22 kWh consumed | 0,070 €/km | 10,00 € |
| Trip total | 42,12 € | ||
How many kilometres do you recover depending on the time spent at the charger? Comparison at nominal peak power.
| Charging stop duration | Porsche 718 Cayman | BYD Dolphin Boost 150kW |
|---|---|---|
| 5 minutes | — | — |
| 10 minutes | — | — |
| 20 minutes | — | — |
| Full session 10 → 80 % | — | — |
Replace one of the two with an alternative from the same segment
300 ch · 2018
204 ch · 58.5 kWh · 2022
The advantage comes from the combo real range + charging speed. On Paris → Marseille (775 km at 130 km/h), the 718 Cayman arrives in 7h21 with 4 charging 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.
Electric: 431,83 € (718 Cayman) and 42,12 € (Dolphin Boost 150kW). An equivalent petrol SUV (~8 L/100 km) would cost about 115 € in motorway fuel. Electric costs less in energy but adds charging stops.