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ACPHEVvsB120dDiesel
  • MotorwayMotorwayRange and charging
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  • SpecsC · 120d

Mercedes C 400 e 4MATIC Limousine W206 vs BMW 120d F40

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

saloon · 2024 vs 2020 · Paris → Marseille · 775 km · 130 km/h
MercedesPHEV

C 400 e 4MATIC Limousine W206

381 ch · 19.5 kWh · 2024

VS
BMWDieselPlus rapide

120d F40

190 ch · 2020

Simulation trip
Assumptions: 130 km/h · start réservoir plein · mild weather

Result · total trip time

AMercedes C 400 e 4MATIC Limousine W206

7h06charging included

1 stop · 142.59 €

Gap5 minin favour of 120d
BBMW 120d F40

7h01no stop

0 stops · 70.63 €

Paris → Marseille · 130 km/h · Caralogy simulation
MeasureC 400 e 4MATIC Limousine W206120d F40Gap
Total time7h067h015 min · 120d F40
Charging stops1 stop0 stops1 stop · 120d F40
Cost of energy used142.59 €70.63 €71.96 € · 120d F40

Visualise the trip

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

MercedesPHEV
C 400 e 4MATIC Limousine W206
100%
Battery
100%
Fuel tank
575 km
Range
Paris
0 km · departure
Refuel 1
5 min · +45 L · 97.65 €
Marseille
775 km · Arrival 7h06
1
Stops
7h06
Duration
142.59 €
Cost of energy used
BMWDieselFastest
120d F40
100%
1190 km
Range
Paris
0 km · departure
Marseille
775 km · Arrival 7h01
0
Stops
7h01
Duration
70.63 €
Cost of energy used

The 5-minute lead of the 120d F40 (combustion) comes from not needing a charging stop: no stop versus 1 stop of 5 min for the C 400 e 4MATIC Limousine W206 (plug-in hybrid).

Both vehicles drove at 130 km/h for the entire trip. The 120d F40 (combustion) makes no stop, the C 400 e 4MATIC Limousine W206 (plug-in hybrid) 1 stop of 5 min. Road safety reminder: on a trip of this duration, it is recommended to stop for at least 51 min total (17 min every 2h). The energy cost is 142,59 € for C 400 e 4MATIC Limousine W206 versus 70,63 € for 120d F40.

Motorway consumption: the Caralogy methodology

The official WLTP figures (22,7 kWh/100km for C 400 e 4MATIC Limousine W206 and 4,6 L/100km for 120d F40) 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 9,4 L/100km (C 400 e 4MATIC Limousine W206) and 4,2 L/100km (120d F40). 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.

Mercedes C 400 e 4MATIC Limousine W206

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Montélimar, A7initial energy charged at home · 0.20 €/kWh94 km21 kWh consumed0.045 €/km4.27 €
Paris → Montélimar, A7fuel · 2.17 €/L481 km45 L consumed0.203 €/km97.65 €
Montélimar, A7 → Marseillefuel · 2.17 €/L200 km19 L consumed0.203 €/km40.67 €
Trip total142.59 €

BMW 120d F40

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Marseillefuel · 2.17 €/L775 km33 L consumed0.091 €/km70.63 €
Trip total70.63 €

What produces these figures

WLTP combined consumption
22.7 kWh/100 km · 4.6 L/100 km
Fuel tank
50 L · 50 L

Compare with another vehicle

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

MercedesPHEV

C 400 e 4MATIC Limousine W206

381 ch · 19.5 kWh · 2024

BMWDiesel

120d F40

190 ch · 2020

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Frequently asked questions

On Paris → Marseille (775 km at 130 km/h), the 120d F40 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 142.59 € (C 400 e 4MATIC Limousine W206) and 70.63 € (120d F40). For reference, an equivalent Peugeot 508 1.6 PureTech 180 (~7.2 L/100 km) would cost about 103 € in fuel.