PorschePetrol
Boxster S
314 ch · 2010
Trip mapped at a glance. Charging stops visible, total duration predictable. Caralogy simulation at 130 km/h.
| Measure | Boxster S | 420i Convertible G22 | Gap |
|---|---|---|---|
| Total time | 7h06 | 7h01 | 5 min · 420i Convertible G22 |
| Charging stops | 1 stop | 0 stops | 1 stop · 420i Convertible G22 |
| Cost of energy used | 136.22 € | 90.81 € | 45.41 € · 420i Convertible G22 |
Both vehicles drove at 130 km/h for the entire trip. The gap is built at the stops: no stop for the 420i Convertible G22 versus 1 stop of 5 min for the Boxster S.
The official WLTP figures (10,1 L/100km for Boxster S and 6,1 L/100km for 420i Convertible G22) 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 8,1 L/100km (Boxster S) and 5,4 L/100km (420i Convertible G22). Full methodology: see the assumptions below the controls.
| Segment | Energy used | Distance | Consumption | €/km | Cost (€) |
|---|---|---|---|---|---|
| Paris → Manosque, A51 | fuel · 2.17 €/L | 711 km | 58 L consumed | 0.176 €/km | 124.94 € |
| Manosque, A51 → Marseille | fuel · 2.17 €/L | 64 km | 5 L consumed | 0.176 €/km | 11.28 € |
| Trip total | 136.22 € |
| Segment | Energy used | Distance | Consumption | €/km | Cost (€) |
|---|---|---|---|---|---|
| Paris → Marseille | fuel · 2.17 €/L | 775 km | 42 L consumed | 0.117 €/km | 90.81 € |
| Trip total | 90.81 € |
Replace one of the two with an alternative from the same segment
314 ch · 2010
184 ch · 2021
On Paris → Marseille (775 km at 130 km/h), the 420i Convertible G22 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 136.22 € (Boxster S) and 90.81 € (420i Convertible G22). For reference, an equivalent BMW M340i (~9.5 L/100 km) would cost about 136 € in fuel.