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911vsBoxsterPetrol
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  • Specs911 · Boxster

Porsche 911 Carrera 4S (PDK) 991.1 vs Porsche Boxster Spyder: 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 2016 · 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 4S (PDK) 991.1

3,698 €per year

11,4 L/100 km weighted · 24.65 € per 100 km · 1 704 L per year

Gap140 € per yearin favour of the 911 Carrera 4S (PDK) (−4 %)≈ 65 L petrol 95
BPorsche Boxster Spyder

3,838 €per year

11,8 L/100 km weighted · 25.58 € per 100 km · 1 769 L per year

The verdict changes with your usage
ProfileSplitAA · 911BB · BoxsterGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway4,048 €4,105 €Nearly level
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway3,698 €3,838 €140 € · 911
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,357 €3,558 €201 € · 911

Cumulative saving for the 911 Carrera 4S (PDK)

1 year
140 €
3 years
420 €
5 years
700 €
10 years
1,400 €

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

What produces these figures

WLTP combined
11.3 L/100 km · 11.8 L/100 km
Powertrain
Combustion · Combustion
Power
390 ch · 375 ch
Kerb weight
1,510 kg · 1,315 kg

Other similar comparisons

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911 Carrera 4S (PDK) vs Z4 M40i

gap 1 580 €/year
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Boxster Spyder vs Z4 M40i

gap 1 766 €/year
PorscheVSBMW

911 Carrera 4S (PDK) vs Z4 M40i

gap 1 649 €/year
PorscheVSBMW

Boxster Spyder vs Z4 M40i

gap 1 836 €/year

Frequently asked questions

On a 100 km mixed trip, the Porsche 911 Carrera 4S (PDK) and Porsche Boxster Spyder have a near-identical cost per km with default parameters. The gap becomes significant once you enter your actual energy prices.

The Porsche 911 Carrera 4S (PDK) is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.