TeslaBEV
Model X Performance
778 ch · 100 kWh · 2020
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
| Model X Performance | Cayenne Diesel 958.2 | |
|---|---|---|
| Total time | 7h21 | 7h11−10 min |
| Charging stops | 2 stops | 2 stops |
| Total cost | 52,16 €−72,76 € | 124,92 € |
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 Cayenne Diesel 958.2 (combustion) makes 2 stops totalling 10 min, the Model X Performance (electric) 2 stops totalling 20 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 52,16 € for Model X Performance versus 124,92 € for Cayenne Diesel 958.2.
The official WLTP figures (23,6 kWh/100km for Model X Performance and 10,2 L/100km for Cayenne Diesel 958.2) 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 21,1 kWh/100km (Model X Performance) and 8,1 L/100km (Cayenne Diesel 958.2). 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 → Limonest, A6initial energy charged at home · 0,21 €/kWh | 426 km90 kWh consumed | 0,044 €/km | 18,90 € |
| Limonest, A6 → Montélimar, A7energy charged at Supercharger 240 kW · 0,45 €/kWh | 189 km40 kWh consumed | 0,095 €/km | 18,00 € |
| Montélimar, A7 → Marseilleenergy charged at Supercharger 242 kW · 0,45 €/kWh | 160 km34 kWh consumed | 0,095 €/km | 15,26 € |
| Trip total | 52,16 € | ||
| Segment | Distance | €/km | Cost |
|---|---|---|---|
| Paris → Tournus, A6fuel · 1,99 €/L | 293 km24 L consumed | 0,161 €/km | 47,28 € |
| Tournus, A6 → Montélimar, A7fuel · 1,99 €/L | 293 km24 L consumed | 0,161 €/km | 47,28 € |
| Montélimar, A7 → Marseillefuel · 1,99 €/L | 188 km15 L consumed | 0,161 €/km | 30,36 € |
| Trip total | 124,92 € | ||
How many kilometres do you recover depending on the time spent at the charger? Comparison at nominal peak power.
| Charging stop duration | Tesla Model X Performance | Porsche Cayenne Diesel 958.2 |
|---|---|---|
| 5 minutes | ~69 km | — |
| 10 minutes | ~138 km | — |
| 20 minutes | ~276 km | — |
| Full session 10 → 80 % | ~331 km26 min | — |
Replace one of the two with an alternative from the same segment
778 ch · 100 kWh · 2020
262 ch · 2015
The advantage comes from the combo real range + charging speed. On Paris → Marseille (775 km at 130 km/h), the Cayenne Diesel 958.2 arrives in 7h11 with 2 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: 52,16 € (Model X Performance) and 124,92 € (Cayenne Diesel 958.2). An equivalent petrol SUV (~8 L/100 km) would cost about 115 € in motorway fuel. Electric costs less in energy but adds charging stops.