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840dDieselvsi4BEV
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost

BMW 840d xDrive Convertible G15 vs BMW i4 eDrive35 G26: 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.

limousine · 2021 vs 2024 · 15,000 km/an · Mixed · Diesel 2.38 €/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 840d xDrive Convertible G15

2,242 €per year

6,3 L/100 km weighted · 14.95 € per 100 km · 944 L per year

Gap1,661 € per yearin favour of the i4 eDrive35 (−74 %)≈ 699 L diesel
BBMW i4 eDrive35 G26

581 €per year

19,3 kWh/100 km weighted · 3.87 € per 100 km · 2 902 kWh per year

The verdict changes with your usage
ProfileSplitAA · 840dBB · i4Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,498 €494 €2,004 € · i4
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,242 €581 €1,661 € · i4
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,049 €687 €1,363 € · i4

Cumulative saving for the i4 eDrive35

1 year
1,661 €
3 years
4,983 €
5 years
8,306 €
10 years
16,611 €

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

What produces these figures

WLTP combined
6.0 L/100 km · 18.6 kWh/100 km
Powertrain
Combustion · Fully electric
Power
340 ch · 286 ch
Kerb weight
2,030 kg · 2,000 kg

Other similar comparisons

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BMWVSTesla

i4 eDrive35 vs Model 3 RWD

gap 210 €/year
AudiVSBMW

A8 55 TFSI quattro tiptronic 250 kW MHEV vs 840d xDrive Convertible

gap 1 349 €/year
BMWVSTesla

i4 eDrive35 vs Model 3 Long Range RWD

gap 148 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW i4 eDrive35 is about 75% cheaper than the BMW 840d xDrive Convertible with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The declared range of the BMW i4 eDrive35 is 406 km (WLTP/EPA). In real-world conditions, expect 10-20% less.

The BMW i4 eDrive35 is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.

Specs
840d
· i4