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AModelBEVvsB840dHybrid
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsModel · 840d

Tesla Model S 85 vs BMW 840d xDrive Convertible G15

Trip mapped at a glance. Charging stops visible, total duration predictable. Caralogy simulation at 130 km/h.

grand tourer · 2012 vs 2020 · Paris → Marseille · 775 km · 130 km/h
TeslaBEV

Model S 85

362 ch · 77.5 kWh · 2012

VS
BMWHybridPlus rapide

840d xDrive Convertible G15

340 ch · 2020

Simulation trip
Assumptions: 130 km/h · start 100 % · mild weather

Result · total trip time

ATesla Model S 85

8h09charging included

4 stops · 86.68 €

Gap68 minin favour of 840d xDrive Convertible
BBMW 840d xDrive Convertible G15

7h01no stop

0 stops · 87.45 €

Paris → Marseille · 130 km/h · Caralogy simulation
MeasureModel S 85840d xDrive Convertible G15Gap
Total time8h097h0168 min · 840d xDrive Convertible G15
Charging stops4 stops0 stops4 stops · 840d xDrive Convertible G15
Cost of energy used86.68 €87.45 €0.77 € · Model S 85

Visualise the trip

Both vehicles drive at 130 km/h. The difference comes from charging stops.

TeslaBEV
Model S 85
100%
315 km
Range
Paris
0 km · departure
Charge 1
16 min · +31 kWh · 18.60 €
Charge 2
16 min · +31 kWh · 18.60 €
Charge 3
16 min · +31 kWh · 18.60 €
Charge 4
20 min · +36 kWh · 21.36 €
Marseille
775 km · Arrival 8h09
4
Stops
8h09
Duration
86.68 €
Cost of energy used
BMWHybridFastest
840d xDrive Convertible G15
100%
1269 km
Range
Paris
0 km · departure
Marseille
775 km · Arrival 7h01
0
Stops
7h01
Duration
87.45 €
Cost of energy used

The 68-minute lead of the 840d xDrive Convertible G15 (hybrid) comes from not needing a charging stop: no stop versus 4 stops totalling 69 min for the Model S 85 (electric).

Both vehicles drove at 130 km/h for the entire trip. The 840d xDrive Convertible G15 (hybrid) makes no stop, the Model S 85 (electric) 4 stops totalling 69 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 86,68 € for Model S 85 versus 87,45 € for 840d xDrive Convertible G15.

Motorway consumption: the Caralogy methodology

The official WLTP figures (23,5 kWh/100km for Model S 85 and 6,0 L/100km for 840d 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 24,6 kWh/100km (Model S 85) and 5,2 L/100km (840d xDrive Convertible G15). Full methodology: see the assumptions below the controls.

What about a 200 km round trip?

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 0.20 €/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.

Energy cost breakdown for your trip Paris → Marseille

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.

Tesla Model S 85

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Beaune, A6initial energy charged at home · 0.20 €/kWh283 km70 kWh consumed0.049 €/km13.96 €
Beaune, A6 → Limonest, A6energy charged at Supercharger 116 kW · 0.60 €/kWh126 km31 kWh consumed0.148 €/km18.60 €
Limonest, A6 → Valence, A7energy charged at Supercharger 116 kW · 0.60 €/kWh126 km31 kWh consumed0.148 €/km18.60 €
Valence, A7 → Manosque, A51energy charged at Supercharger 116 kW · 0.60 €/kWh126 km31 kWh consumed0.148 €/km18.60 €
Manosque, A51 → Marseilleenergy charged at Supercharger 107 kW · 0.60 €/kWh114 km28 kWh consumed0.148 €/km16.93 €
Trip total86.68 €

BMW 840d xDrive Convertible G15

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Marseillefuel · 2.17 €/L775 km40 L consumed0.113 €/km87.45 €
Trip total87.45 €

Range recovered by stop duration

How many kilometres do you recover depending on the time spent at the charger? Comparison at nominal peak power.
Charging stop durationTesla Model S 85BMW 840d xDrive Convertible G15
5 minutes~28 km-
10 minutes~57 km-
20 minutes~114 km-
Full session 10 → 80 %~220 km · 42 min-

What produces these figures

WLTP combined consumption
23.5 kWh/100 km · 6.0 L/100 km

Compare with another vehicle

Replace one of the two with an alternative from the same segment

TeslaBEV

Model S 85

362 ch · 77.5 kWh · 2012

BMWHybrid

840d xDrive Convertible G15

340 ch · 2020

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i5 xDrive40 vs Model S 85

AudiVSBMW

A8 55 TFSI quattro tiptronic 250 kW MHEV vs 840d xDrive Convertible

Frequently asked questions

The advantage comes from the combo real range + charging speed. On Paris → Marseille (775 km at 130 km/h), the 840d xDrive Convertible G15 arrives in 7h01 with 0 fuel 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.

On this trip, the energy used costs 86.68 € (Model S 85) and 87.45 € (840d xDrive Convertible G15). For reference, an equivalent BMW 530i (~8.0 L/100 km) would cost about 115 € in fuel.