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A6vs318dDiesel
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  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsA6 · 318d

Audi A6 Avant vs BMW 318d Steptronic G20: 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 2019 · 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

AAudi A6 Avant

2,039 €per year

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

Gap403 € per yearin favour of the 318d Steptronic (−20 %)≈ 170 L diesel
BBMW 318d Steptronic G20

1,636 €per year

4,6 L/100 km weighted · 10.91 € per 100 km · 689 L per year

The verdict changes with your usage
ProfileSplitAA · A6BB · 318dGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,086 €1,723 €363 € · 318d
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,039 €1,636 €403 € · 318d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway1,945 €1,568 €377 € · 318d

Cumulative saving for the 318d Steptronic

1 year
403 €
3 years
1,210 €
5 years
2,016 €
10 years
4,033 €

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

What produces these figures

WLTP combined
5.9 L/100 km · 4.5 L/100 km
Powertrain
Combustion · Combustion
Power
204 ch · 150 ch
Kerb weight
2,000 kg · 1,455 kg

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Frequently asked questions

On a 100 km mixed trip, the BMW 318d Steptronic is about 20% cheaper than the Audi A6 Avant with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW 318d Steptronic is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.