BMWBEV
iX xDrive40
326 ch · 76.6 kWh · 2021
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
| iX xDrive40 | Q7 SUV | |
|---|---|---|
| Total time | 8h21 | 7h06−75 min |
| Charging stops | 5 stops | 1 stop−4 stops |
| Total cost | 96,24 €−69,20 € | 165,44 € |
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 Q7 SUV (combustion) makes 1 stop of 5 min, the iX xDrive40 (electric) 5 stops totalling 80 min. Road safety reminder: on a trip of this duration, it is recommended to stop for at least 68 min total (17 min every 2h). The energy cost is 96,24 € for iX xDrive40 versus 165,44 € for Q7 SUV.
The official WLTP figures (21,3 kWh/100km for iX xDrive40 and 8,4 L/100km for Q7 SUV) 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 26,6 kWh/100km (iX xDrive40) and 10,5 L/100km (Q7 SUV). 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 → Beaune, A6initial energy charged at home · 0,20 €/kWh | 259 km69 kWh consumed | 0,053 €/km | 13,79 € |
| Beaune, A6 → Tournus, A6energy charged at Ionity 108 kW · 0,60 €/kWh | 115 km31 kWh consumed | 0,160 €/km | 18,38 € |
| Tournus, A6 → Valence, A7energy charged at Ionity 108 kW · 0,60 €/kWh | 115 km31 kWh consumed | 0,160 €/km | 18,38 € |
| Valence, A7 → Montélimar, A7energy charged at Ionity 108 kW · 0,60 €/kWh | 115 km31 kWh consumed | 0,160 €/km | 18,38 € |
| Montélimar, A7 → Manosque, A51energy charged at Ionity 108 kW · 0,60 €/kWh | 115 km31 kWh consumed | 0,160 €/km | 18,38 € |
| Manosque, A51 → Marseilleenergy charged at Ionity 105 kW · 0,60 €/kWh | 56 km15 kWh consumed | 0,159 €/km | 8,91 € |
| Trip total | 96,24 € | ||
| Segment | Distance | €/km | Cost |
|---|---|---|---|
| Paris → Montélimar, A7fuel · 2,03 €/L | 643 km68 L consumed | 0,213 €/km | 137,23 € |
| Montélimar, A7 → Marseillefuel · 2,03 €/L | 132 km14 L consumed | 0,214 €/km | 28,21 € |
| Trip total | 165,44 € | ||
How many kilometres do you recover depending on the time spent at the charger? Comparison at nominal peak power.
| Charging stop duration | BMW iX xDrive40 | Audi Q7 SUV |
|---|---|---|
| 5 minutes | - | - |
| 10 minutes | - | - |
| 20 minutes | - | - |
| Full session 10 → 80 % | - | - |
Replace one of the two with an alternative from the same segment
326 ch · 76.6 kWh · 2021
231 ch · 2026
The advantage comes from the combo real range + charging speed. On Paris → Marseille (775 km at 130 km/h), the Q7 SUV arrives in 7h06 with 1 charging stop.
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: 96,24 € (iX xDrive40) and 165,44 € (Q7 SUV). An equivalent petrol SUV (~8 L/100 km) would cost about 115 € in motorway fuel. Electric costs less in energy but adds charging stops.