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X5vsS8Petrol
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  • SpecsX5 · S8

BMW X5 M Competition G05 vs Audi S8: 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.

large SUV · 2021 vs 2025 · 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 X5 M Competition G05

4,629 €per year

14,2 L/100 km weighted · 30.86 € per 100 km · 2 133 L per year

Gap934 € per yearin favour of the S8 (−20 %)≈ 431 L petrol 95
BAudi S8

3,694 €per year

11,3 L/100 km weighted · 24.63 € per 100 km · 1 702 L per year

The verdict changes with your usage
ProfileSplitAA · X5BB · S8Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway5,421 €3,780 €1,641 € · S8
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway4,629 €3,694 €934 € · S8
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway4,020 €3,523 €497 € · S8

Cumulative saving for the S8

1 year
934 €
3 years
2,803 €
5 years
4,671 €
10 years
9,343 €

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

What produces these figures

WLTP combined
13.3 L/100 km · 11.7 L/100 km
Powertrain
Combustion · Combustion
Power
625 ch · 571 ch
Kerb weight
2,335 kg · 2,220 kg

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BMWVSAudi

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gap 603 €/year
AudiVSPorsche

S8 vs Panamera Turbo

gap 2 195 €/year

Frequently asked questions

On a 100 km mixed trip, the Audi S8 is about 20% cheaper than the BMW X5 M Competition with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The Audi S8 is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.