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  • Specs911 · 911

Porsche 911 Turbo Cabriolet 991.2 vs Porsche 911 Targa 4 991.1: 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 · 2017 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 Turbo Cabriolet 991.2

3,672 €per year

11,3 L/100 km weighted · 24.48 € per 100 km · 1 692 L per year

Gap100 € per yearin favour of the 911 Targa 4 (−3 %)≈ 46 L petrol 95
BPorsche 911 Targa 4 991.1

3,572 €per year

11,0 L/100 km weighted · 23.81 € per 100 km · 1 646 L per year

The verdict changes with your usage
ProfileSplitAA · 911BB · 911Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway3,896 €3,990 €Nearly level
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway3,672 €3,572 €Nearly level
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,457 €3,247 €210 € · 911

Cumulative saving for the 911 Targa 4

1 year
100 €
3 years
300 €
5 years
500 €
10 years
1,001 €

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

What produces these figures

WLTP combined
11.2 L/100 km · 10.5 L/100 km
Powertrain
Combustion · Combustion
Power
547 ch · 355 ch
Kerb weight
1,665 kg · 1,540 kg

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Frequently asked questions

On a 100 km mixed trip, the Porsche 911 Turbo Cabriolet and Porsche 911 Targa 4 have a near-identical cost per km with default parameters. The gap becomes significant once you enter your actual energy prices.

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