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420iPetrolvs218dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs420i · 218d

BMW 420i Steptronic Gran Coupe G22 vs BMW 218d Steptronic F44: 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 · 2021 vs 2021 · 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 420i Steptronic Gran Coupe G22

2,152 €per year

6,6 L/100 km weighted · 14.34 € per 100 km · 991 L per year

Gap551 € per yearin favour of the 218d Steptronic (−26 %)≈ 254 L petrol 95
BBMW 218d Steptronic F44

1,600 €per year

4,5 L/100 km weighted · 10.67 € per 100 km · 674 L per year

The verdict changes with your usage
ProfileSplitAA · 420iBB · 218dGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,422 €1,688 €734 € · 218d
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,152 €1,600 €551 € · 218d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway1,943 €1,533 €411 € · 218d

Cumulative saving for the 218d Steptronic

1 year
551 €
3 years
1,654 €
5 years
2,757 €
10 years
5,513 €

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

What produces these figures

WLTP combined
6.3 L/100 km · 4.4 L/100 km
Powertrain
Combustion · Combustion
Power
184 ch · 150 ch
Kerb weight
1,570 kg · 1,490 kg

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Frequently asked questions

On a 100 km mixed trip, the BMW 218d Steptronic is about 25% cheaper than the BMW 420i Steptronic Gran Coupe with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW 218d Steptronic is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.