PorschePetrol
911 Targa 4S 991.2
426 ch · 2017
Trip mapped at a glance. Charging stops visible, total duration predictable. Caralogy simulation at 130 km/h.
Paris → Marseille · 130 km/h · Caralogy simulation
| 911 Targa 4S 991.2 | Cyberster RWD | |
|---|---|---|
| Total time | 7h21−14 min | 7h35 |
| Charging stops | 4 stops | 2 stops−2 stops |
| Cost of energy used | 132.35 € | 46.46 €−85.89 € |
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 911 Targa 4S 991.2 (combustion) makes 4 stops totalling 20 min, the Cyberster RWD (electric) 2 stops totalling 34 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 132,35 € for 911 Targa 4S 991.2 versus 46,46 € for Cyberster RWD.
The official WLTP figures (10,7 L/100km for 911 Targa 4S 991.2 and 15,0 kWh/100km for Cyberster RWD) 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 8,4 L/100km (911 Targa 4S 991.2) and 15,8 kWh/100km (Cyberster RWD). 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 · 2,03 €/L | 192 km16 L consumed | 0,171 €/km | 32,75 € |
| Auxerre, A6 → Limonest, A6fuel · 2,03 €/L | 192 km16 L consumed | 0,171 €/km | 32,75 € |
| Limonest, A6 → Montélimar, A7fuel · 2,03 €/L | 192 km16 L consumed | 0,171 €/km | 32,75 € |
| Montélimar, A7 → Aix-en-Provence, A7fuel · 2,03 €/L | 192 km16 L consumed | 0,171 €/km | 32,75 € |
| Aix-en-Provence, A7 → Marseillefuel · 2,03 €/L | 8 km1 L consumed | 0,168 €/km | 1,34 € |
| Trip total | 132,35 € | ||
| Segment | Distance | €/km | Cost (€) |
|---|---|---|---|
| Paris → Limonest, A6initial energy charged at home · 0,20 €/kWh | 425 km67 kWh consumed | 0,032 €/km | 13,40 € |
| Limonest, A6 → Montélimar, A7energy charged at Ionity 105 kW · 0,60 €/kWh | 189 km30 kWh consumed | 0,094 €/km | 17,86 € |
| Montélimar, A7 → Marseilleenergy charged at Ionity 106 kW · 0,60 €/kWh | 161 km25 kWh consumed | 0,094 €/km | 15,21 € |
| Trip total | 46,46 € | ||
How many kilometres do you recover depending on the time spent at the charger? Comparison at nominal peak power.
| Charging stop duration | Porsche 911 Targa 4S 991.2 | MG Cyberster RWD |
|---|---|---|
| 5 minutes | - | - |
| 10 minutes | - | - |
| 20 minutes | - | - |
| Full session 10 → 80 % | - | - |
Replace one of the two with an alternative from the same segment
426 ch · 2017
340 ch · 74.4 kWh · 2023
The advantage comes from the combo real range + charging speed. On Paris → Marseille (775 km at 130 km/h), the 911 Targa 4S 991.2 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: 132,35 € (911 Targa 4S 991.2) and 46,46 € (Cyberster RWD). An equivalent petrol SUV (~8 L/100 km) would cost about 115 € in motorway fuel. Electric costs less in energy but adds charging stops.