Aller au contenu principal
CaralogyCaralogy
HomeBrandsRoad TripBudgetDuelGuides
Caralogy

The car comparison platform. Physics simulation, road trips, real costs.

Navigation
All brandsCar duelRunning costsMotorwayMethodology
Simulators
Motorway simulatorRunning costsPerformance duel
Brands
VolkswagenBMWMercedesToyotaTeslaAudi
FRDEESIT
© 2026 Caralogy · All rights reserved
Home›Consumption›Porsche 718 vs Porsche 911

Consumption comparison

Porsche 718 Cayman GTS vs Porsche 911 Carrera T 991.2: how much do I save per year?

Same car, two powertrains. The simulator below calculates the gap based on your mileage and charging type.

PorschePetrol

718 Cayman GTS

64 L · 2018

11,2 L/100km

VS
PorschePetrolMost economical

911 Carrera T 991.2

64 L · 2018

12,4 L/100km

MotorwayRange & chargingPerformance0-100, top speedConsumptionAnnual TCO

Annual mileage

15 000 km/an

5 000 km50 000 km

Simulated driving mix

Drag anywhere on the bar to adjust

Fuel price

Petrol 95 : 1,99 €/L·Diesel : 1,75 €/L

Annual energy cost · 15 000 km

Typical annual usage : Mix 30% city / 50% road / 20% motorway

PorschePetrol

718 Cayman GTS

Annual energy cost · 15 000 km

3 935€

26,23 € / 100 km

Equivalent to 1 977 L of petrol 95 per year

Weighted consumption
13,2 L/100km
Fuel price
1,99 €/L
Fuel used
1977,3 L per year
PorschePetrolMost economical

911 Carrera T 991.2

Annual energy cost · 15 000 km

3 845€

25,63 € / 100 km

Equivalent to 1 932 L of petrol 95 per year

Weighted consumption
12,9 L/100km
Fuel price
1,99 €/L
Fuel used
1932,3 L per year
Annual gap 911 Carrera T vs 718 Cayman GTS+90 €/an≈ 45 L petrol 95

Porsche 911 Carrera T 991.2 costs 90 €/an less in energy than Porsche 718 Cayman GTS, over 15 000 km for this driving mix.

≈ 45 L of petrol 95 saved per year

Your savings over the ownership period

Cumulative projection by annual mileage. The cheaper-to-run vehicle widens the gap year after year.

Annual mileage

15 000 km/an

1 year

90 €

≈ 45 L petrol 95

3 years

269 €

≈ 135 L petrol 95

5 years

448 €

≈ 225 L petrol 95

10 years

896 €

≈ 450 L petrol 95

Cumulative savings for Porsche 911 Carrera T 991.2 versus Porsche 718 Cayman GTS. Excluding purchase, insurance, maintenance and depreciation.

Annual fuel cost breakdown

Projection over 15 000 km/year.

Porsche

718 Cayman GTS

Fuelkm/year€/kmAnnual cost
Annual fuel1,99 €/L15 000 km0,262 €/km3 935 €
Porsche

911 Carrera T 991.2

Fuelkm/year€/kmAnnual cost
Annual fuel1,99 €/L15 000 km0,256 €/km3 845 €

Frequently asked questions

On a 100 km mixed trip, the Porsche 718 Cayman GTS is about 10% cheaper than the Porsche 911 Carrera T with default parameters. This ratio shifts with your actual energy prices — simulate for your profile.

The Porsche 718 Cayman GTS is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.