BMW i8 Coupe I12 vs BMW 420i Gran Coupé 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 car · 2018 vs 2024 · 15,000 km/an · Mixed · Petrol 95 2.17 €/L · Home 0.20 €/kWh · 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

Charging type

Result · yearly energy cost

ABMW i8 Coupe I12

Comparison unavailable - manufacturer data being validated.

GapComparison unavailable - manufacturer data being validated.

BBMW 420i Gran Coupé G22

2,211 €per year

6,8 L/100 km weighted · 14.74 € per 100 km · 1 019 L per year

What produces these figures

WLTP combined: 100.0 kWh/100 km · 6.5 L/100 km
Powertrain: Plug-in hybrid · Combustion
Power: 374 ch · 184 ch
Kerb weight: 1,535 kg · 1,620 kg

Other similar comparisons

AudiVSBMW

Frequently asked questions

What is the range of the BMW i8 Coupe vs the BMW 420i Gran Coupé?

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

Other similar comparisons

A4 40 TFSI vs 420i Gran Coupé

A5 Avant vs 420i Gran Coupé

A5 Avant vs 420i Gran Coupé

A5 Avant TFSI quattro S tronic 150 kW vs 420i Gran Coupé

Frequently asked questions