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M340iHybridvsEPHEV
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
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BMW M340i xDrive G20 vs Mercedes E 400 e 4MATIC W214: 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.

saloon · 2020 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 M340i xDrive G20

2,402 €per year

7,4 L/100 km weighted · 16.01 € per 100 km · 1 107 L per year

Gap1,497 € per yearin favour of the E 400 e 4MATIC (−62 %)≈ 690 L petrol 95
BMercedes E 400 e 4MATIC W214

906 €per year

23,9 kWh/100 km weighted · 6.04 € per 100 km · 1 254 L per year

The verdict changes with your usage
ProfileSplitAA · M340iBB · EGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,716 €906 €1,811 € · E
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,402 €906 €1,497 € · E
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,165 €906 €1,259 € · E

Cumulative saving for the E 400 e 4MATIC

1 year
1,497 €
3 years
4,490 €
5 years
7,483 €
10 years
14,966 €

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

What produces these figures

WLTP combined
7.0 L/100 km · 23.0 kWh/100 km
Powertrain
Mild hybrid 48 V · Plug-in hybrid
Power
382 ch · 381 ch
Kerb weight
1,823 kg · 2,245 kg

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Frequently asked questions

On a 100 km mixed trip, the Mercedes E 400 e 4MATIC is about 60% cheaper than the BMW M340i xDrive with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The declared range of the Mercedes E 400 e 4MATIC is 90 km (WLTP/EPA). In real-world conditions, expect 10-20% less.

The Mercedes E 400 e 4MATIC is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.

M340i
· E