i8PHEVvs420dDiesel

BMW i8 Coupe I12 vs BMW 420d G22: which is cheaper to run?

What each kilometre costs, depending on your driving profile, how you charge and the share of the trip driven on electricity or fuel.

sports car2018 vs 202115,000 km/anMixedPetrol 95 2.17 €/L · Diesel 2.38 €/LHome 0.20 €/kWhMethodology

Annual mileage

15,000 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

Charging type

Result · yearly energy cost

ABMW i8 Coupe I12

Comparison unavailable - manufacturer data being validated.

GapComparison unavailable - manufacturer data being validated.

BBMW 420d G22

1,550 €per year

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

What produces these figures

WLTP combined: 100.0 kWh/100 km · 4.2 L/100 km
Powertrain: Plug-in hybrid · Combustion
Power: 374 ch · 190 ch
Kerb weight: 1,535 kg · 1,605 kg

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Frequently asked questions

What is the range of the BMW i8 Coupe vs the BMW 420d?

The declared range of the BMW i8 Coupe is 55 km (WLTP/EPA). In real-world conditions, expect 10-20% less.

Result · yearly energy cost

What produces these figures

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