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ACaymanPetrolvsB5BEV
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  • SpecsCayman · 5

Porsche Cayman vs MG5 Standard Range FWD

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

sports car · 2014 vs 2022 · Paris → Marseille · 775 km · 130 km/h
PorschePetrolPlus rapide

Cayman

279 ch · 2014

VS
MGBEV

5 Standard Range FWD

177 ch · 50.3 kWh · 2022

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

Result · total trip time

APorsche Cayman

7h21charging included

4 stops · 504.52 €

Gap89 minin favour of Cayman
BMG5 Standard Range FWD

8h50charging included

6 stops · 81.78 €

Paris → Marseille · 130 km/h · Caralogy simulation
MeasureCayman5 Standard Range FWDGap
Total time7h218h5089 min · Cayman
Charging stops4 stops6 stops2 stops · Cayman
Cost of energy used504.52 €81.78 €422.74 € · 5 Standard Range FWD

Visualise the trip

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

PorschePetrolFastest
Cayman
100%
192 km
Range
Paris
0 km · departure
Refuel 1
5 min · +58 L · 124.94 €
Refuel 2
5 min · +58 L · 124.94 €
Refuel 3
5 min · +58 L · 124.94 €
Refuel 4
5 min · +58 L · 124.94 €
Marseille
775 km · Arrival 7h21
4
Stops
7h21
Duration
504.52 €
Cost of energy used
MGBEV
5 Standard Range FWD
100%
234 km
Range
Paris
0 km · departure
Charge 1
17 min · +20 kWh · 12.07 €
Charge 2
17 min · +20 kWh · 12.07 €
Charge 3
17 min · +20 kWh · 12.07 €
Charge 4
17 min · +20 kWh · 12.07 €
Charge 5
17 min · +20 kWh · 12.07 €
Charge 6
25 min · +27 kWh · 16.23 €
Marseille
775 km · Arrival 8h50
6
Stops
8h50
Duration
81.78 €
Cost of energy used

The 89-minute lead of the Cayman (combustion) comes from not needing a charging stop: 4 stops totalling 20 min versus 6 stops totalling 109 min for the 5 Standard Range FWD (electric).

Both vehicles drove at 130 km/h for the entire trip. The Cayman (combustion) makes 4 stops totalling 20 min, the 5 Standard Range FWD (electric) 6 stops totalling 109 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 504,52 € for Cayman versus 81,78 € for 5 Standard Range FWD.

Motorway consumption: the Caralogy methodology

The official WLTP figures (9,7 L/100km for Cayman and 17,9 kWh/100km for 5 Standard Range FWD) 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 30,0 L/100km (Cayman) and 21,5 kWh/100km (5 Standard Range FWD). 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.

Porsche Cayman

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Auxerre, A6fuel · 2.17 €/L192 km58 L consumed0.651 €/km124.94 €
Auxerre, A6 → Limonest, A6fuel · 2.17 €/L192 km58 L consumed0.651 €/km124.94 €
Limonest, A6 → Montélimar, A7fuel · 2.17 €/L192 km58 L consumed0.651 €/km124.94 €
Montélimar, A7 → Aix-en-Provence, A7fuel · 2.17 €/L192 km58 L consumed0.651 €/km124.94 €
Aix-en-Provence, A7 → Marseillefuel · 2.17 €/L7 km2 L consumed0.681 €/km4.76 €
Trip total504.52 €

MG 5 Standard Range FWD

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Beaune, A6initial energy charged at home · 0.20 €/kWh211 km45 kWh consumed0.043 €/km9.06 €
Beaune, A6 → Tournus, A6energy charged at Ionity 71 kW · 0.60 €/kWh94 km20 kWh consumed0.128 €/km12.07 €
Tournus, A6 → Limonest, A6energy charged at Ionity 71 kW · 0.60 €/kWh94 km20 kWh consumed0.128 €/km12.07 €
Limonest, A6 → Valence, A7energy charged at Ionity 71 kW · 0.60 €/kWh94 km20 kWh consumed0.128 €/km12.07 €
Valence, A7 → Montélimar, A7energy charged at Ionity 71 kW · 0.60 €/kWh94 km20 kWh consumed0.128 €/km12.07 €
Montélimar, A7 → Manosque, A51energy charged at Ionity 71 kW · 0.60 €/kWh94 km20 kWh consumed0.128 €/km12.07 €
Manosque, A51 → Marseilleenergy charged at Ionity 65 kW · 0.60 €/kWh96 km21 kWh consumed0.129 €/km12.36 €
Trip total81.78 €

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 durationPorsche CaymanMG 5 Standard Range FWD
5 minutes--
10 minutes--
20 minutes--
Full session 10 → 80 %--

What produces these figures

WLTP combined consumption
9.7 L/100 km · 17.9 kWh/100 km

Compare with another vehicle

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

PorschePetrol

Cayman

279 ch · 2014

MGBEV

5 Standard Range FWD

177 ch · 50.3 kWh · 2022

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Frequently asked questions

The advantage comes from the combo real range + charging speed. On Paris → Marseille (775 km at 130 km/h), the Cayman arrives in 7h21 with 4 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 504.52 € (Cayman) and 81.78 € (5 Standard Range FWD). For reference, an equivalent BMW M340i (~9.5 L/100 km) would cost about 136 € in fuel.