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AM2vsB718Petrol
  • MotorwayMotorwayRange and charging
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  • SpecsM2 · 718

BMW M2 G87 vs Porsche 718 Cayman GTS PDK

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

compact · 2023 vs 2018 · Paris → Marseille · 775 km · 130 km/h
BMWPetrolPlus rapide

M2 G87

460 ch · 2023

VS
PorschePetrol

718 Cayman GTS PDK

365 ch · 2018

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

Result · total trip time

ABMW M2 G87

7h06charging included

1 stop · 201.81 €

Gap10 minin favour of M2
BPorsche 718 Cayman GTS PDK

7h16charging included

3 stops · 437.26 €

Paris → Marseille · 130 km/h · Caralogy simulation
MeasureM2 G87718 Cayman GTS PDKGap
Total time7h067h1610 min · M2 G87
Charging stops1 stop3 stops2 stops · M2 G87
Cost of energy used201.81 €437.26 €235.45 € · M2 G87

Visualise the trip

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

BMWPetrolFastest
M2 G87
100%
390 km
Range
Paris
0 km · departure
Refuel 1
5 min · +47 L · 101.56 €
Marseille
775 km · Arrival 7h06
1
Stops
7h06
Duration
201.81 €
Cost of energy used
PorschePetrol
718 Cayman GTS PDK
100%
222 km
Range
Paris
0 km · departure
Refuel 1
5 min · +58 L · 124.99 €
Refuel 2
5 min · +58 L · 124.99 €
Refuel 3
5 min · +58 L · 124.99 €
Marseille
775 km · Arrival 7h16
3
Stops
7h16
Duration
437.25 €
Cost of energy used

The 10-minute lead of the M2 G87 does not come from driving speed, but from 2 fewer charging stops on this route (1 vs 3).

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 M2 G87 versus 3 stops totalling 15 min for the 718 Cayman GTS PDK.

Motorway consumption: the Caralogy methodology

The official WLTP figures (10,0 L/100km for M2 G87 and 10,7 L/100km for 718 Cayman GTS PDK) 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 12,0 L/100km (M2 G87) and 26,0 L/100km (718 Cayman GTS PDK). Full methodology: see the assumptions below the controls.

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.

BMW M2 G87

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Limonest, A6fuel · 2.17 €/L390 km47 L consumed0.260 €/km101.56 €
Limonest, A6 → Marseillefuel · 2.17 €/L385 km46 L consumed0.260 €/km100.25 €
Trip total201.81 €

Porsche 718 Cayman GTS PDK

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Beaune, A6fuel · 2.17 €/L222 km58 L consumed0.563 €/km124.99 €
Beaune, A6 → Limonest, A6fuel · 2.17 €/L222 km58 L consumed0.563 €/km124.99 €
Limonest, A6 → Manosque, A51fuel · 2.17 €/L222 km58 L consumed0.563 €/km124.99 €
Manosque, A51 → Marseillefuel · 2.17 €/L110 km29 L consumed0.566 €/km62.28 €
Trip total437.26 €

What produces these figures

WLTP combined consumption
10.0 L/100 km · 10.7 L/100 km
Fuel tank
52 L · 64 L

Compare with another vehicle

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

BMWPetrol

M2 G87

460 ch · 2023

PorschePetrol

718 Cayman GTS PDK

365 ch · 2018

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Frequently asked questions

On Paris → Marseille (775 km at 130 km/h), the M2 G87 arrives in 7h06 with 1 fuel 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.

On this trip, the energy used costs 201.81 € (M2 G87) and 437.26 € (718 Cayman GTS PDK). For reference, an equivalent Peugeot 308 1.2 PureTech 130 (~6.8 L/100 km) would cost about 97 € in fuel.