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911vsCaymanPetrol
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  • Specs911 · Cayman

Porsche 911 Carrera 4 (Manual) 991.1 vs Porsche Cayman: which is cheaper to run?

What each kilometre costs, depending on your driving profile and how you charge. Annual projection and cumulative savings over 10 years.

sports car · 2011 vs 2014 · 15,000 km/an · Mixed · Petrol 95 2.17 €/L · Methodology
Annual mileage
15,000 km
5,000 km50,000 km
Driving mix

30 % City · 50 % Road · 20 % Motorway

Fuel price
Petrol 95 2.17 €/L · Diesel 2.38 €/Lprix-carburants.gouv.fr — moyenne nationale du 05/10/2026 ; EDF Tarif Bleu Base au 01/08/2026 ; DC autoroute : moyenne des réseaux sans abonnement

Result · yearly energy cost

APorsche 911 Carrera 4 (Manual) 991.1

3,750 €per year

11,5 L/100 km weighted · 25.00 € per 100 km · 1 728 L per year

Gap569 € per yearin favour of the Cayman (−15 %)≈ 262 L petrol 95
BPorsche Cayman

3,181 €per year

9,8 L/100 km weighted · 21.21 € per 100 km · 1 466 L per year

The verdict changes with your usage
ProfileSplitAA · 911BB · CaymanGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway4,067 €3,468 €599 € · Cayman
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway3,750 €3,181 €569 € · Cayman
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,443 €2,902 €541 € · Cayman

Cumulative saving for the Cayman

1 year
569 €
3 years
1,706 €
5 years
2,843 €
10 years
5,685 €

Energy only. Excludes purchase, insurance, servicing, depreciation.

What produces these figures

WLTP combined
11.4 L/100 km · 9.7 L/100 km
Powertrain
Combustion · Combustion
Power
350 ch · 279 ch
Kerb weight
1,552 kg · 1,310 kg

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911 Carrera 4 (Manual) vs Z4 M40i

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Cayman vs Z4 sDrive30i

gap 1 529 €/year

Frequently asked questions

On a 100 km mixed trip, the Porsche Cayman is about 15% cheaper than the Porsche 911 Carrera 4 (Manual) with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

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