BMW i8 Coupe I12 vs BMW 840i Convertible G15: which one uses less fuel?

Plug-in hybrid vs electric: the cost depends on your usage profile. Select your scenario below.

sports car · 2018 vs 2021 · 15,000 km/an · Mixed · Petrol 95 2.03 €/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 2.03 €/L · Diesel 2.25 €/Lprix-carburants.gouv.fr — moyenne nationale du 25/08/2026 ; 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 840i Convertible G15

2,409 €per year

7,9 L/100 km weighted · 16.06 € per 100 km · 1 185 L per year

What produces these figures

WLTP combined: 100.0 kWh/100 km · 7.5 L/100 km
Powertrain: Plug-in hybrid · Combustion
Power: 374 ch · 333 ch
Kerb weight: 1,535 kg · 1,840 kg

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Frequently asked questions

What is the range of the BMW i8 Coupe vs the BMW 840i Convertible?

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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