Skip to main content
CaralogyCaralogy
HomeBrandsRoad TripBudgetDuelGuides
Caralogy

The car comparison platform. Physics simulation, road trips, real costs.

Navigation
All brandsCar duelRunning costsMotorwayMethodology
Simulators
Motorway simulatorRunning costsPerformance duel
Brands
VolkswagenBMWMercedesToyotaTeslaAudi
FRENDEESIT
© 2026 Caralogy · All rights reserved
  1. Home
  2. /Consumption
  3. /Estates
RS6vsM850iPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsRS6 · M850i

Audi RS6 Performance Avant vs BMW M850i xDrive G15: 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 2020 · 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

Gap586 € per yearin favour of the M850i xDrive (−14 %)≈ 270 L petrol 95
BBMW M850i xDrive G15

3,496 €per year

10,7 L/100 km weighted · 23.31 € per 100 km · 1 611 L per year

The verdict changes with your usage
ProfileSplitAA · RS6BB · M850iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway4,560 €4,129 €431 € · M850i
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway4,082 €3,496 €586 € · M850i
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,711 €3,011 €700 € · M850i

Cumulative saving for the M850i xDrive

1 year
586 €
3 years
1,758 €
5 years
2,930 €
10 years
5,859 €

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

What produces these figures

WLTP combined
12.0 L/100 km · 10.0 L/100 km
Powertrain
Combustion · Combustion
Power
630 ch · 530 ch
Kerb weight
2,175 kg · 1,930 kg

Other similar comparisons

AudiVSBMW

RS6 Performance Avant vs M5 Competition

gap 365 €/year
PorscheVSBMW

Panamera Turbo vs M850i xDrive

gap 1 099 €/year
AudiVSBMW

RS6 Performance Avant vs M5 Competition

gap 434 €/year
PorscheVSBMW

Panamera Turbo vs M850i xDrive

gap 2 459 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW M850i xDrive is about 15% cheaper than the Audi RS6 Performance Avant with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW M850i xDrive is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.