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S3vsM135iPetrol
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  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsS3 · M135i

Audi S3 Sedan vs BMW M135i xDrive F40: which one uses less fuel?

Same car, two powertrains. The simulator below calculates the gap based on your mileage and charging type.

compact · 2026 vs 2020 · 15,000 km/an · Mixed · Petrol 95 2.03 €/L · Methodology
Annual mileage
15,000 km
5,000 km50,000 km
Driving mix

30 % City · 50 % Road · 20 % Motorway

Fuel price
Petrol 95 2.03 €/L · Diesel 2.25 €/Lprix-carburants.gouv.fr — moyenne nationale du 25/08/2026 ; EDF Tarif Bleu Base au 01/08/2026 ; DC autoroute : moyenne des réseaux sans abonnement

Result · yearly energy cost

AAudi S3 Sedan

2,537 €per year

8,3 L/100 km weighted · 16.92 € per 100 km · 1 248 L per year

Gap406 € per yearin favour of the M135i xDrive (−16 %)≈ 200 L petrol 95
BBMW M135i xDrive F40

2,132 €per year

7,0 L/100 km weighted · 14.21 € per 100 km · 1 049 L per year

The verdict changes with your usage
ProfileSplitAA · S3BB · M135iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,556 €2,351 €204 € · M135i
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,537 €2,132 €406 € · M135i
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,501 €1,967 €534 € · M135i

Cumulative saving for the M135i xDrive

1 year
406 €
3 years
1,217 €
5 years
2,028 €
10 years
4,057 €

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

What produces these figures

WLTP combined
8.4 L/100 km · 6.7 L/100 km
Powertrain
Combustion · Combustion
Power
333 ch · 306 ch
Kerb weight
1,535 kg · 1,525 kg

Other similar comparisons

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M140i xDrive vs S3 Sedan

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AudiVSBMW

RS 3 Sedan vs M135i xDrive

gap 825 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW M135i xDrive is about 15% cheaper than the Audi S3 Sedan with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW M135i xDrive is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.