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120dDieselvsA3Petrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs120d · A3

BMW 120d F40 vs Audi A3 Sedan: 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.

compact · 2020 vs 2026 · 15,000 km/an · Mixed · Diesel 2.38 €/L · 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

ABMW 120d F40

1,686 €per year

4,7 L/100 km weighted · 11.24 € per 100 km · 710 L per year

Gap78 € per yearin favour of the 120d (−4 %)≈ 36 L petrol 95
BAudi A3 Sedan

1,764 €per year

5,4 L/100 km weighted · 11.76 € per 100 km · 813 L per year

The verdict changes with your usage
ProfileSplitAA · 120dBB · A3Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway1,807 €1,784 €Nearly level
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway1,686 €1,764 €78 € · 120d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway1,593 €1,725 €132 € · 120d

Cumulative saving for the 120d

1 year
78 €
3 years
235 €
5 years
392 €
10 years
784 €

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

What produces these figures

WLTP combined
4.6 L/100 km · 5.5 L/100 km
Powertrain
Combustion · Combustion
Power
190 ch · 116 ch
Kerb weight
1,450 kg · 1,315 kg

Other similar comparisons

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BMWVSAudi

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gap 368 €/year
BMWVSAudi

120d vs A3 Sportback

gap 33 €/year
AudiVSBMW

A3 Sedan vs 116i

gap 260 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW 120d and Audi A3 Sedan have a near-identical cost per km with default parameters. The gap becomes significant once you enter your actual energy prices.

The BMW 120d is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.