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A718PetrolvsB218dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
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  • Specs718 · 218d

Porsche 718 Boxster GTS vs BMW 218d Convertible F22

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

sports car · 2018 vs 2018 · Paris → Marseille · 775 km · 130 km/h
PorschePetrol

718 Boxster GTS

365 ch · 2018

VS
BMWDieselPlus rapide

218d Convertible F22

150 ch · 2018

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

Result · total trip time

APorsche 718 Boxster GTS

7h16charging included

3 stops · 420.44 €

Gap15 minin favour of 218d Convertible
BBMW 218d Convertible F22

7h01no stop

0 stops · 79.04 €

Paris → Marseille · 130 km/h · Caralogy simulation
Measure718 Boxster GTS218d Convertible F22Gap
Total time7h167h0115 min · 218d Convertible F22
Charging stops3 stops0 stops3 stops · 218d Convertible F22
Cost of energy used420.44 €79.04 €341.40 € · 218d Convertible F22

Visualise the trip

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

PorschePetrol
718 Boxster GTS
100%
230 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
420.44 €
Cost of energy used
BMWDieselFastest
218d Convertible F22
100%
1106 km
Range
Paris
0 km · departure
Marseille
775 km · Arrival 7h01
0
Stops
7h01
Duration
79.04 €
Cost of energy used

The 15-minute lead of the 218d Convertible F22 does not come from driving speed, but from 3 fewer charging stops on this route (0 vs 3).

Both vehicles drove at 130 km/h for the entire trip. The gap is built at the stops: no stop for the 218d Convertible F22 versus 3 stops totalling 15 min for the 718 Boxster GTS.

Motorway consumption: the Caralogy methodology

The official WLTP figures (11,2 L/100km for 718 Boxster GTS and 5,2 L/100km for 218d Convertible F22) 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 25,0 L/100km (718 Boxster GTS) and 4,7 L/100km (218d Convertible F22). 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.

Porsche 718 Boxster GTS

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Beaune, A6fuel · 2.17 €/L230 km58 L consumed0.543 €/km124.99 €
Beaune, A6 → Limonest, A6fuel · 2.17 €/L230 km58 L consumed0.543 €/km124.99 €
Limonest, A6 → Manosque, A51fuel · 2.17 €/L230 km58 L consumed0.543 €/km124.99 €
Manosque, A51 → Marseillefuel · 2.17 €/L84 km21 L consumed0.541 €/km45.46 €
Trip total420.44 €

BMW 218d Convertible F22

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Marseillefuel · 2.17 €/L775 km36 L consumed0.102 €/km79.04 €
Trip total79.04 €

What produces these figures

WLTP combined consumption
11.2 L/100 km · 5.2 L/100 km
Fuel tank
64 L · 52 L

Compare with another vehicle

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

PorschePetrol

718 Boxster GTS

365 ch · 2018

BMWDiesel

218d Convertible F22

150 ch · 2018

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Frequently asked questions

On Paris → Marseille (775 km at 130 km/h), the 218d Convertible F22 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 420.44 € (718 Boxster GTS) and 79.04 € (218d Convertible F22). For reference, an equivalent BMW M340i (~9.5 L/100 km) would cost about 136 € in fuel.