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120dDieselvs118iPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs120d · 118i

BMW 120d F40 vs BMW 118i F40: 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 2019 · 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

Gap205 € per yearin favour of the 120d (−11 %)≈ 95 L petrol 95
BBMW 118i F40

1,891 €per year

5,8 L/100 km weighted · 12.61 € per 100 km · 872 L per year

The verdict changes with your usage
ProfileSplitAA · 120dBB · 118iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway1,807 €2,129 €322 € · 120d
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway1,686 €1,891 €205 € · 120d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway1,593 €1,670 €77 € · 120d

Cumulative saving for the 120d

1 year
205 €
3 years
616 €
5 years
1,027 €
10 years
2,054 €

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

What produces these figures

WLTP combined
4.6 L/100 km · 5.7 L/100 km
Powertrain
Combustion · Combustion
Power
190 ch · 140 ch
Kerb weight
1,450 kg · 1,290 kg

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Frequently asked questions

On a 100 km mixed trip, the BMW 120d is about 10% cheaper than the BMW 118i with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

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.