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M440iPetrolvs318dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsM440i · 318d

BMW M440i xDrive F32 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.

saloon · 2020 vs 2019 · 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 M440i xDrive F32

2,425 €per year

7,5 L/100 km weighted · 16.17 € per 100 km · 1 118 L per year

Gap789 € per yearin favour of the 318d Steptronic (−33 %)≈ 364 L petrol 95
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 · M440iBB · 318dGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,726 €1,723 €1,003 € · 318d
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,425 €1,636 €789 € · 318d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,194 €1,568 €626 € · 318d

Cumulative saving for the 318d Steptronic

1 year
789 €
3 years
2,367 €
5 years
3,945 €
10 years
7,891 €

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

What produces these figures

WLTP combined
7.1 L/100 km · 4.5 L/100 km
Powertrain
Combustion · Combustion
Power
374 ch · 150 ch
Kerb weight
1,740 kg · 1,455 kg

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Frequently asked questions

On a 100 km mixed trip, the BMW 318d Steptronic is about 35% cheaper than the BMW M440i xDrive 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.