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540dvsA6Diesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs540d · A6

BMW 540d xDrive G30 vs Audi A6 Avant: 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 · 2018 vs 2026 · 15,000 km/an · Mixed · Diesel 2.38 €/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 540d xDrive G30

2,181 €per year

6,1 L/100 km weighted · 14.54 € per 100 km · 918 L per year

Gap142 € per yearin favour of the A6 Avant (−7 %)≈ 60 L diesel
BAudi A6 Avant

2,039 €per year

5,7 L/100 km weighted · 13.59 € per 100 km · 858 L per year

The verdict changes with your usage
ProfileSplitAA · 540dBB · A6Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,390 €2,086 €304 € · A6
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,181 €2,039 €142 € · A6
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,021 €1,945 €76 € · A6

Cumulative saving for the A6 Avant

1 year
142 €
3 years
426 €
5 years
710 €
10 years
1,420 €

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

What produces these figures

WLTP combined
5.9 L/100 km · 5.9 L/100 km
Powertrain
Combustion · Combustion
Power
320 ch · 204 ch
Kerb weight
1,735 kg · 2,000 kg

Other similar comparisons

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540d xDrive vs A6 Avant TDI quattro S tronic 220 kW

gap 3 €/year
AudiVSBMW

A6 Avant vs 520d

gap 62 €/year
BMWVSAudi

540d xDrive vs A6 Sedan TDI quattro S tronic 220 kW

gap 97 €/year
AudiVSBMW

A6 Avant vs 520d Touring

gap 1 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW 540d xDrive and Audi A6 Avant have a near-identical cost per km with default parameters. The gap becomes significant once you enter your actual energy prices.

The Audi A6 Avant is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.