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Z4PetrolvsA3Diesel
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  • SpecsZ4 · A3

BMW Z4 sDrive30i G29 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.

sports car · 2021 vs 2026 · 15,000 km/an · Mixed · Petrol 95 2.17 €/L · 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 Z4 sDrive30i G29

2,034 €per year

6,3 L/100 km weighted · 13.56 € per 100 km · 938 L per year

Gap284 € per yearin favour of the A3 Sedan (−14 %)≈ 131 L petrol 95
BAudi A3 Sedan

1,750 €per year

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

The verdict changes with your usage
ProfileSplitAA · Z4BB · A3Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,238 €1,956 €282 € · A3
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,034 €1,750 €284 € · A3
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway1,881 €1,591 €290 € · A3

Cumulative saving for the A3 Sedan

1 year
284 €
3 years
852 €
5 years
1,420 €
10 years
2,839 €

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

What produces these figures

WLTP combined
6.0 L/100 km · 4.7 L/100 km
Powertrain
Combustion · Combustion
Power
258 ch · 116 ch
Kerb weight
1,430 kg · 1,355 kg

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A3 Sedan vs 116d

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Frequently asked questions

On a 100 km mixed trip, the Audi A3 Sedan is about 15% cheaper than the BMW Z4 sDrive30i with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The Audi A3 Sedan is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.