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125dDieselvsA3Petrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs125d · A3

BMW 125d F20LCI vs Audi A3 allstreet: 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 · 2018 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 125d F20LCI

1,750 €per year

4,9 L/100 km weighted · 11.67 € per 100 km · 737 L per year

Gap87 € per yearin favour of the 125d (−5 %)≈ 40 L petrol 95
BAudi A3 allstreet

1,837 €per year

5,6 L/100 km weighted · 12.25 € per 100 km · 846 L per year

The verdict changes with your usage
ProfileSplitAA · 125dBB · A3Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway1,876 €2,052 €176 € · 125d
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway1,750 €1,837 €87 € · 125d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway1,647 €1,670 €Nearly level

Cumulative saving for the 125d

1 year
87 €
3 years
261 €
5 years
434 €
10 years
869 €

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

What produces these figures

WLTP combined
4.8 L/100 km · 5.4 L/100 km
Powertrain
Combustion · Combustion
Power
224 ch · 150 ch
Kerb weight
1,480 kg · 1,435 kg

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gap 52 €/year
AudiVSBMW

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gap 72 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW 125d and Audi A3 allstreet have a near-identical cost per km with default parameters. The gap becomes significant once you enter your actual energy prices.

The BMW 125d is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.