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Caymanvs718Petrol
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  • SpecsCayman · 718

Porsche Cayman S (PDK) vs Porsche 718 Boxster: 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 2017 · 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 Cayman S (PDK)

4,160 €per year

12,8 L/100 km weighted · 27.73 € per 100 km · 1 917 L per year

Gap924 € per yearin favour of the 718 Boxster (−22 %)≈ 426 L petrol 95
BPorsche 718 Boxster

3,236 €per year

9,9 L/100 km weighted · 21.57 € per 100 km · 1 491 L per year

The verdict changes with your usage
ProfileSplitAA · CaymanBB · 718Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway5,521 €3,486 €2,034 € · 718
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway4,160 €3,236 €924 € · 718
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,369 €3,008 €361 € · 718

Cumulative saving for the 718 Boxster

1 year
924 €
3 years
2,773 €
5 years
4,622 €
10 years
9,244 €

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

What produces these figures

WLTP combined
10.1 L/100 km · 9.8 L/100 km
Powertrain
Combustion · Combustion
Power
320 ch · 300 ch
Kerb weight
1,375 kg · 1,335 kg

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Frequently asked questions

On a 100 km mixed trip, the Porsche 718 Boxster is about 20% cheaper than the Porsche Cayman S (PDK) with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

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