BMWBEV
i7 M70 xDrive G70
659 ch · 101.7 kWh · 2023
Trip mapped at a glance. Charging stops visible, total duration predictable. Caralogy simulation at 130 km/h.
| Measure | i7 M70 xDrive G70 | Megane E-Tech Electric | Gap |
|---|---|---|---|
| Total time | 7h51 | 7h30 | 21 min · Megane E-Tech Electric |
| Charging stops | 3 stops | 2 stops | 1 stop · Megane E-Tech Electric |
| Cost of energy used | 84.76 € | 42.58 € | 42.18 € · Megane E-Tech Electric |
Both vehicles drove at 130 km/h for the entire trip. The gap is built at the stops: 2 stops totalling 29 min for the Megane E-Tech Electric 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 15,8 kWh/100km for Megane E-Tech Electric) 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 13,8 kWh/100km (Megane E-Tech Electric). Full methodology: see the assumptions below the controls.
During the 29 minutes of charging for the Megane E-Tech Electric, range recovers by 414 km. During the 50 cumulative minutes for the i7 M70 xDrive G70, range recovers by 454 km. Per minute: the Megane E-Tech Electric recovers 1,6× 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 3,0× that of the Megane E-Tech Electric. The gap narrows in winter but never reverses.
| Segment | Energy used | Distance | Consumption | €/km | Cost (€) |
|---|---|---|---|---|---|
| Paris → Tournus, A6 | initial energy charged at home · 0.20 €/kWh | 351 km | 92 kWh consumed | 0.052 €/km | 18.32 € |
| Tournus, A6 → Valence, A7 | energy charged at Ionity 144 kW · 0.60 €/kWh | 156 km | 41 kWh consumed | 0.156 €/km | 24.41 € |
| Valence, A7 → Manosque, A51 | energy charged at Ionity 144 kW · 0.60 €/kWh | 156 km | 41 kWh consumed | 0.156 €/km | 24.41 € |
| Manosque, A51 → Marseille | energy charged at Ionity 140 kW · 0.60 €/kWh | 113 km | 29 kWh consumed | 0.156 €/km | 17.63 € |
| Trip total | 84.76 € |
| Segment | Energy used | Distance | Consumption | €/km | Cost (€) |
|---|---|---|---|---|---|
| Paris → Limonest, A6 | initial energy charged at home · 0.20 €/kWh | 391 km | 54 kWh consumed | 0.028 €/km | 10.81 € |
| Limonest, A6 → Montélimar, A7 | energy charged at Ionity 120 kW · 0.60 €/kWh | 174 km | 24 kWh consumed | 0.083 €/km | 14.40 € |
| Montélimar, A7 → Marseille | energy charged at Ionity 110 kW · 0.60 €/kWh | 210 km | 29 kWh consumed | 0.083 €/km | 17.37 € |
| Trip total | 42.58 € |
| Charging stop duration | BMW i7 M70 xDrive G70 | Renault Megane E-Tech Electric |
|---|---|---|
| 5 minutes | - | ~55 km |
| 10 minutes | - | ~110 km |
| 20 minutes | - | ~220 km |
| Full session 10 → 80 % | - | ~304 km · 30 min |
Replace one of the two with an alternative from the same segment
659 ch · 101.7 kWh · 2023
218 ch · 60 kWh · 2024
The advantage comes from the combo real range + charging speed. On Paris → Marseille (775 km at 130 km/h), the Megane E-Tech Electric arrives in 7h30 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: 84,76 € (i7 M70 xDrive G70) and 42,58 € (Megane E-Tech Electric). An equivalent Mercedes S 450 (~9,0 L/100 km) would cost about 129 € in motorway fuel. Electric costs less in energy but adds charging stops.