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RS6vsM8Petrol
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  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsRS6 · M8

Audi RS6 Performance Avant vs BMW M8 Competition Convertible F92: 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 · 2023 vs 2021 · 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

AAudi RS6 Performance Avant

4,082 €per year

12,5 L/100 km weighted · 27.21 € per 100 km · 1 881 L per year

Gap42 € per yearin favour of the M8 Competition Convertible (−1 %)≈ 19 L petrol 95
BBMW M8 Competition Convertible F92

4,039 €per year

12,4 L/100 km weighted · 26.93 € per 100 km · 1 862 L per year

The verdict changes with your usage
ProfileSplitAA · RS6BB · M8Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway4,560 €4,912 €352 € · RS6
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway4,082 €4,039 €Nearly level
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,711 €3,369 €342 € · M8

Cumulative saving for the M8 Competition Convertible

1 year
42 €
3 years
127 €
5 years
212 €
10 years
423 €

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

What produces these figures

WLTP combined
12.0 L/100 km · 11.4 L/100 km
Powertrain
Combustion · Combustion
Power
630 ch · 625 ch
Kerb weight
2,175 kg · 2,025 kg

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BMWVSAudi

M8 Competition Convertible vs S8

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Frequently asked questions

On a 100 km mixed trip, the Audi RS6 Performance Avant and BMW M8 Competition Convertible have a near-identical cost per km with default parameters. The gap becomes significant once you enter your actual energy prices.

The BMW M8 Competition Convertible is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.