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S6BEVvs840dDiesel
  • MotorwayMotorwayRange and charging
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Audi S6 Sportback e-tron vs BMW 840d 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 · 2026 vs 2018 · 15,000 km/an · Mixed · Diesel 2.38 €/L · Home 0.20 €/kWh · 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
Charging type

Result · yearly energy cost

AAudi S6 Sportback e-tron

515 €per year

17,2 kWh/100 km weighted · 3.43 € per 100 km · 2 574 kWh per year

Gap1,787 € per yearin favour of the S6 Sportback e-tron (−78 %)≈ 752 L diesel
BBMW 840d xDrive G15

2,302 €per year

6,5 L/100 km weighted · 15.35 € per 100 km · 969 L per year

The verdict changes with your usage
ProfileSplitAA · S6BB · 840dGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway438 €2,545 €2,106 € · S6
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway515 €2,302 €1,787 € · S6
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway609 €2,117 €1,508 € · S6

Cumulative saving for the S6 Sportback e-tron

1 year
1,787 €
3 years
5,362 €
5 years
8,936 €
10 years
17,873 €

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

What produces these figures

WLTP combined
16.5 kWh/100 km · 6.2 L/100 km
Powertrain
Fully electric · Combustion
Power
543 ch · 320 ch
Kerb weight
2,325 kg · 1,830 kg

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Frequently asked questions

On a 100 km mixed trip, the Audi S6 Sportback e-tron is about 80% cheaper than the BMW 840d xDrive with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The declared range of the Audi S6 Sportback e-tron is 594 km (WLTP/EPA). In real-world conditions, expect 10-20% less.

The Audi S6 Sportback e-tron is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.

S6
· 840d