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AS6BEVvsB718Petrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsS6 · 718

Audi S6 Sportback e-tron vs Porsche 718 Cayman

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

grand tourer · 2026 vs 2018 · Paris → Marseille · 775 km · 130 km/h
AudiBEV

S6 Sportback e-tron

543 ch · 94.4 kWh · 2026

VS
PorschePetrolPlus rapide

718 Cayman

300 ch · 2018

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

Result · total trip time

AAudi S6 Sportback e-tron

7h33charging included

2 stops · 56.56 €

Gap12 minin favour of 718 Cayman
BPorsche 718 Cayman

7h21charging included

4 stops · 470.89 €

Paris → Marseille · 130 km/h · Caralogy simulation
MeasureS6 Sportback e-tron718 CaymanGap
Total time7h337h2112 min · 718 Cayman
Charging stops2 stops4 stops2 stops · S6 Sportback e-tron
Cost of energy used56.56 €470.89 €414.33 € · S6 Sportback e-tron

Visualise the trip

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

AudiBEV
S6 Sportback e-tron
100%
485 km
Range
Paris
0 km · departure
Charge 1
17 min · +38 kWh · 22.66 €
Charge 2
15 min · +34 kWh · 20.41 €
Marseille
775 km · Arrival 7h33
2
Stops
7h33
Duration
56.56 €
Cost of energy used
PorschePetrolFastest
718 Cayman
100%
174 km
Range
Paris
0 km · departure
Refuel 1
5 min · +49 L · 105.72 €
Refuel 2
5 min · +49 L · 105.72 €
Refuel 3
5 min · +49 L · 105.72 €
Refuel 4
5 min · +49 L · 105.72 €
Marseille
775 km · Arrival 7h21
4
Stops
7h21
Duration
470.89 €
Cost of energy used

The 12-minute lead of the 718 Cayman (combustion) comes from not needing a charging stop: 4 stops totalling 20 min versus 2 stops totalling 32 min for the S6 Sportback e-tron (electric).

Both vehicles drove at 130 km/h for the entire trip. The 718 Cayman (combustion) makes 4 stops totalling 20 min, the S6 Sportback e-tron (electric) 2 stops totalling 32 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 56,56 € for S6 Sportback e-tron versus 470,89 € for 718 Cayman.

Motorway consumption: the Caralogy methodology

The official WLTP figures (16,5 kWh/100km for S6 Sportback e-tron and 9,8 L/100km for 718 Cayman) 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 19,5 kWh/100km (S6 Sportback e-tron) and 28,0 L/100km (718 Cayman). 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.

Audi S6 Sportback e-tron

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Limonest, A6initial energy charged at home · 0.20 €/kWh436 km85 kWh consumed0.039 €/km17.00 €
Limonest, A6 → Montélimar, A7energy charged at Ionity 133 kW · 0.60 €/kWh194 km38 kWh consumed0.117 €/km22.66 €
Montélimar, A7 → Marseilleenergy charged at Ionity 136 kW · 0.60 €/kWh145 km28 kWh consumed0.117 €/km16.90 €
Trip total56.56 €

Porsche 718 Cayman

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Auxerre, A6fuel · 2.17 €/L174 km49 L consumed0.608 €/km105.72 €
Auxerre, A6 → Tournus, A6fuel · 2.17 €/L174 km49 L consumed0.608 €/km105.72 €
Tournus, A6 → Valence, A7fuel · 2.17 €/L174 km49 L consumed0.608 €/km105.72 €
Valence, A7 → Manosque, A51fuel · 2.17 €/L174 km49 L consumed0.608 €/km105.72 €
Manosque, A51 → Marseillefuel · 2.17 €/L79 km22 L consumed0.608 €/km48.02 €
Trip total470.89 €

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 durationAudi S6 Sportback e-tronPorsche 718 Cayman
5 minutes--
10 minutes--
20 minutes--
Full session 10 → 80 %--

What produces these figures

WLTP combined consumption
16.5 kWh/100 km · 9.8 L/100 km

Compare with another vehicle

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

AudiBEV

S6 Sportback e-tron

543 ch · 94.4 kWh · 2026

PorschePetrol

718 Cayman

300 ch · 2018

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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 718 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 56.56 € (S6 Sportback e-tron) and 470.89 € (718 Cayman). For reference, an equivalent BMW 530i (~8.0 L/100 km) would cost about 115 € in fuel.