BMWPetrol
M8 Competition Convertible F92
625 ch · 2021
Trip mapped at a glance. Charging stops visible, total duration predictable. Caralogy simulation at 130 km/h.
Paris → Marseille · 130 km/h · Caralogy simulation
| M8 Competition Convertible F92 | M4 Convertible F82 | |
|---|---|---|
| Total time | 7h06 | 7h06 |
| Charging stops | 1 stop | 1 stop |
| Cost of energy used | 129.20 €−7.88 € | 137.08 € |
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: 1 stop of 5 min for the M8 Competition Convertible F92 versus 1 stop of 5 min for the M4 Convertible F82.
The official WLTP figures (11,4 L/100km for M8 Competition Convertible F92 and 10,2 L/100km for M4 Convertible F82) 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 8,2 L/100km (M8 Competition Convertible F92) and 8,7 L/100km (M4 Convertible F82). 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 → Aix-en-Provence, A7fuel · 2,03 €/L | 746 km61 L consumed | 0,167 €/km | 124,42 € |
| Aix-en-Provence, A7 → Marseillefuel · 2,03 €/L | 29 km2 L consumed | 0,165 €/km | 4,78 € |
| Trip total | 129,20 € | ||
| Segment | Distance | €/km | Cost (€) |
|---|---|---|---|
| Paris → Montélimar, A7fuel · 2,03 €/L | 621 km54 L consumed | 0,177 €/km | 109,78 € |
| Montélimar, A7 → Marseillefuel · 2,03 €/L | 154 km13 L consumed | 0,177 €/km | 27,29 € |
| Trip total | 137,08 € | ||
Replace one of the two with an alternative from the same segment
625 ch · 2021
431 ch · 2018
On Paris → Marseille (775 km at 130 km/h), the M8 Competition Convertible F92 arrives in 7h06 with 1 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: 129,20 € (M8 Competition Convertible F92) and 137,08 € (M4 Convertible F82). An equivalent petrol SUV (~8 L/100 km) would cost about 115 € in motorway fuel. Electric costs less in energy but adds charging stops.