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840iPetrolvsA6BEV
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost

BMW 840i Convertible G15 vs Audi A6 Sportback e-tron: 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.

limousine · 2021 vs 2026 · 15,000 km/an · Mixed · Petrol 95 2.17 €/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

ABMW 840i Convertible G15

2,571 €per year

7,9 L/100 km weighted · 17.14 € per 100 km · 1 185 L per year

Gap2,134 € per yearin favour of the A6 Sportback e-tron (−83 %)≈ 984 L petrol 95
BAudi A6 Sportback e-tron

437 €per year

14,6 kWh/100 km weighted · 2.91 € per 100 km · 2 184 kWh per year

The verdict changes with your usage
ProfileSplitAA · 840iBB · A6Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,921 €372 €2,549 € · A6
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,571 €437 €2,134 € · A6
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,301 €517 €1,784 € · A6

Cumulative saving for the A6 Sportback e-tron

1 year
2,134 €
3 years
6,403 €
5 years
10,672 €
10 years
21,344 €

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

What produces these figures

WLTP combined
7.5 L/100 km · 14.0 kWh/100 km
Powertrain
Combustion · Fully electric
Power
333 ch · 286 ch
Kerb weight
1,840 kg · 2,100 kg

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Frequently asked questions

On a 100 km mixed trip, the Audi A6 Sportback e-tron is about 85% cheaper than the BMW 840i Convertible with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The declared range of the Audi A6 Sportback e-tron is 616 km (WLTP/EPA). In real-world conditions, expect 10-20% less.

The Audi A6 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.

Specs
840i
· A6