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MustangvsCaymanPetrol
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  • SpecsMustang · Cayman

Ford Mustang GT 449 vs Porsche Cayman (Manual): 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 2011 · 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

Gap475 € per yearin favour of the Mustang GT 449 (−11 %)≈ 219 L petrol 95
BPorsche Cayman (Manual)

4,195 €per year

12,9 L/100 km weighted · 27.97 € per 100 km · 1 933 L per year

The verdict changes with your usage
ProfileSplitAA · MustangBB · CaymanGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway3,730 €5,351 €1,621 € · Mustang
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway3,720 €4,195 €475 € · Mustang
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,576 €3,500 €Nearly level

Cumulative saving for the Mustang GT 449

1 year
475 €
3 years
1,426 €
5 years
2,376 €
10 years
4,753 €

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

What produces these figures

WLTP combined
12.0 L/100 km · 10.7 L/100 km
Powertrain
Combustion · Combustion
Power
455 ch · 269 ch
Kerb weight
1,764 kg · 1,330 kg

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Mustang GT 449 vs M4 Competition Convertible

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Mustang GT 449 vs M4 Competition Coupe

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PorscheVSBMW

Cayman (Manual) vs Z4 sDrive30i

gap 2 881 €/year

Frequently asked questions

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

The Ford Mustang GT 449 is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.