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Mustangvs911Petrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsMustang · 911

Ford Mustang GT 449 vs Porsche 911 Carrera 991.2: 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.

saloon · 2024 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

AFord Mustang GT 449

3,720 €per year

11,4 L/100 km weighted · 24.80 € per 100 km · 1 714 L per year

Gap380 € per yearin favour of the 911 Carrera (−10 %)≈ 175 L petrol 95
BPorsche 911 Carrera 991.2

3,340 €per year

10,3 L/100 km weighted · 22.26 € per 100 km · 1 539 L per year

The verdict changes with your usage
ProfileSplitAA · MustangBB · 911Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway3,730 €3,650 €Nearly level
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway3,720 €3,340 €380 € · 911
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,576 €3,030 €546 € · 911

Cumulative saving for the 911 Carrera

1 year
380 €
3 years
1,141 €
5 years
1,902 €
10 years
3,805 €

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

What produces these figures

WLTP combined
12.0 L/100 km · 10.2 L/100 km
Powertrain
Combustion · Combustion
Power
455 ch · 375 ch
Kerb weight
1,764 kg · 1,430 kg

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Mustang GT 449 vs M4 Competition Convertible

gap 312 €/year
PorscheVSBMW

911 Carrera vs Z4 M40i

gap 1 102 €/year
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Mustang GT 449 vs M4 Competition Coupe

gap 421 €/year
PorscheVSBMW

911 Carrera vs Z4 M40i

gap 1 172 €/year

Frequently asked questions

On a 100 km mixed trip, the Porsche 911 Carrera is about 10% cheaper than the Ford Mustang GT 449 with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

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