BMWBEV
i7 M70 xDrive G70
659 ch · 101.7 kWh · 2023
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
| i7 M70 xDrive G70 | G9 | |
|---|---|---|
| Total time | 7h51 | 7h27−24 min |
| Charging stops | 3 stops | 3 stops |
| Cost of energy used | 84.76 € | 84.66 €−0.10 € |
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 gap is built at the stops: 3 stops totalling 26 min for the G9 versus 3 stops totalling 50 min for the i7 M70 xDrive G70.
The official WLTP figures (22,5 kWh/100km for i7 M70 xDrive G70 and 20,2 kWh/100km for G9) 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 26,1 kWh/100km (i7 M70 xDrive G70) and 25,3 kWh/100km (G9). Full methodology: see the dedicated button above the summary.
During the 26 minutes of charging for the G9, range recovers by 480 km. During the 50 cumulative minutes for the i7 M70 xDrive G70, range recovers by 454 km. Per minute: the G9 recovers 2,0× faster. At this rate, the charging stop blends into the trip rhythm - just enough time for a coffee. At a lower rate, it dictates the pace.
A Mercedes S 450 (equivalent segment) consumes about 9,0 L/100km on the motorway at 130 km/h. At 1,9 €/L, this Paris → Marseille trip would cost ~129 €. That is 1,5× the electric cost of the i7 M70 xDrive G70 and 1,5× that of the G9. The gap narrows in winter but never reverses.
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 → Tournus, A6initial energy charged at home · 0,20 €/kWh | 351 km92 kWh consumed | 0,052 €/km | 18,32 € |
| Tournus, A6 → Valence, A7energy charged at Ionity 144 kW · 0,60 €/kWh | 156 km41 kWh consumed | 0,156 €/km | 24,41 € |
| Valence, A7 → Manosque, A51energy charged at Ionity 144 kW · 0,60 €/kWh | 156 km41 kWh consumed | 0,156 €/km | 24,41 € |
| Manosque, A51 → Marseilleenergy charged at Ionity 140 kW · 0,60 €/kWh | 113 km29 kWh consumed | 0,156 €/km | 17,63 € |
| Trip total | 84,76 € | ||
| Segment | Distance | €/km | Cost (€) |
|---|---|---|---|
| Paris → Tournus, A6initial energy charged at home · 0,20 €/kWh | 324 km82 kWh consumed | 0,051 €/km | 16,39 € |
| Tournus, A6 → Limonest, A6energy charged at Ionity 273 kW · 0,60 €/kWh | 144 km36 kWh consumed | 0,152 €/km | 21,84 € |
| Limonest, A6 → Montélimar, A7energy charged at Ionity 273 kW · 0,60 €/kWh | 144 km36 kWh consumed | 0,152 €/km | 21,84 € |
| Montélimar, A7 → Marseilleenergy charged at Ionity 265 kW · 0,60 €/kWh | 162 km41 kWh consumed | 0,152 €/km | 24,59 € |
| Trip total | 84,66 € | ||
How many kilometres do you recover depending on the time spent at the charger? Comparison at nominal peak power.
| Charging stop duration | BMW i7 M70 xDrive G70 | Xpeng G9 |
|---|---|---|
| 5 minutes | - | ~69 km |
| 10 minutes | - | ~139 km |
| 20 minutes | - | ~277 km |
| Full session 10 → 80 % | - | ~252 km20 min |
Replace one of the two with an alternative from the same segment
659 ch · 101.7 kWh · 2023
543 ch · 91 kWh · 2024
The advantage comes from the combo real range + charging speed. On Paris → Marseille (775 km at 130 km/h), the G9 arrives in 7h27 with 3 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: 84,76 € (i7 M70 xDrive G70) and 84,66 € (G9). An equivalent petrol SUV (~8 L/100 km) would cost about 115 € in motorway fuel. Electric costs less in energy but adds charging stops.