BMWPetrol
M240i xDrive Convertible F22
340 ch · 2018
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
| M240i xDrive Convertible F22 | 840i xDrive Convertible G15 | |
|---|---|---|
| Total time | 7h06 | 7h01−5 min |
| Charging stops | 1 stop | 0 stops−1 stop |
| Total cost | 107,96 € | 103,33 €−4,63 € |
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: no stop for the 840i xDrive Convertible G15 versus 1 stop of 5 min for the M240i xDrive Convertible F22.
The official WLTP figures (8,4 L/100km for M240i xDrive Convertible F22 and 8,0 L/100km for 840i xDrive Convertible G15) 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 7,0 L/100km (M240i xDrive Convertible F22) and 6,7 L/100km (840i xDrive Convertible G15). Full methodology: see the dedicated button above the summary.
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 → Manosque, A51fuel · 1,99 €/L | 669 km47 L consumed | 0,139 €/km | 93,13 € |
| Manosque, A51 → Marseillefuel · 1,99 €/L | 106 km7 L consumed | 0,140 €/km | 14,83 € |
| Trip total | 107,96 € | ||
| Segment | Distance | €/km | Cost |
|---|---|---|---|
| Paris → Marseillefuel · 1,99 €/L | 775 km52 L consumed | 0,133 €/km | 103,33 € |
| Trip total | 103,33 € | ||
Replace one of the two with an alternative from the same segment
340 ch · 2018
333 ch · 2021
On Paris → Marseille (775 km at 130 km/h), the 840i xDrive Convertible G15 arrives in 7h01 with 0 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: 107,96 € (M240i xDrive Convertible F22) and 103,33 € (840i xDrive Convertible G15). An equivalent petrol SUV (~8 L/100 km) would cost about 115 € in motorway fuel. Electric costs less in energy but adds charging stops.