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M5vsCayennePetrol
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  • SpecsM5 · Cayenne

BMW M5 CS F90 vs Porsche Cayenne Turbo: 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.

grand tourer · 2021 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

ABMW M5 CS F90

3,987 €per year

12,3 L/100 km weighted · 26.58 € per 100 km · 1 838 L per year

Gap430 € per yearin favour of the M5 CS (−10 %)≈ 198 L petrol 95
BPorsche Cayenne Turbo

4,417 €per year

13,6 L/100 km weighted · 29.45 € per 100 km · 2 036 L per year

The verdict changes with your usage
ProfileSplitAA · M5BB · CayenneGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway4,834 €4,845 €Nearly level
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway3,987 €4,417 €430 € · M5
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,330 €4,002 €672 € · M5

Cumulative saving for the M5 CS

1 year
430 €
3 years
1,289 €
5 years
2,148 €
10 years
4,297 €

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

What produces these figures

WLTP combined
11.3 L/100 km · 13.4 L/100 km
Powertrain
Combustion · Combustion
Power
635 ch · 500 ch
Kerb weight
1,825 kg · 2,170 kg

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Frequently asked questions

On a 100 km mixed trip, the BMW M5 CS is about 10% cheaper than the Porsche Cayenne Turbo with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW M5 CS is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.