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230iPetrolvs420dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs230i · 420d

BMW 230i Convertible F22 vs BMW 420d G22: 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 · 2018 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 230i Convertible F22

2,161 €per year

6,6 L/100 km weighted · 14.41 € per 100 km · 996 L per year

Gap611 € per yearin favour of the 420d (−28 %)≈ 282 L petrol 95
BBMW 420d G22

1,550 €per year

4,4 L/100 km weighted · 10.34 € per 100 km · 653 L per year

The verdict changes with your usage
ProfileSplitAA · 230iBB · 420dGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,347 €1,666 €681 € · 420d
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,161 €1,550 €611 € · 420d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,025 €1,468 €556 € · 420d

Cumulative saving for the 420d

1 year
611 €
3 years
1,833 €
5 years
3,055 €
10 years
6,110 €

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

What produces these figures

WLTP combined
6.4 L/100 km · 4.2 L/100 km
Powertrain
Combustion · Combustion
Power
252 ch · 190 ch
Kerb weight
1,575 kg · 1,605 kg

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Frequently asked questions

On a 100 km mixed trip, the BMW 420d is about 30% cheaper than the BMW 230i Convertible with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW 420d is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.