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4PHEVvs420iPetrol
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DS4 E-Tense 300 4WD vs BMW 420i Convertible 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.

compact · 2021 vs 2021 · 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

ADS4 E-Tense 300 4WD

895 €per year

16,0 kWh/100 km weighted · 5.97 € per 100 km · 1 114 L per year

Gap1,172 € per yearin favour of the 4 E-Tense 300 4WD (−57 %)≈ 540 L petrol 95
BBMW 420i Convertible G22

2,067 €per year

6,3 L/100 km weighted · 13.78 € per 100 km · 953 L per year

The verdict changes with your usage
ProfileSplitAA · 4BB · 420iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway895 €2,270 €1,375 € · 4
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway895 €2,067 €1,172 € · 4
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway895 €1,914 €1,019 € · 4

Cumulative saving for the 4 E-Tense 300 4WD

1 year
1,172 €
3 years
3,515 €
5 years
5,858 €
10 years
11,716 €

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

What produces these figures

WLTP combined
16.1 kWh/100 km · 6.1 L/100 km
Powertrain
Plug-in hybrid · Combustion
Power
305 ch · 184 ch
Kerb weight
1,780 kg · 1,690 kg

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Frequently asked questions

On a 100 km mixed trip, the DS4 E-Tense 300 4WD is about 55% cheaper than the BMW 420i Convertible with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The declared range of the DS4 E-Tense 300 4WD is 60 km (WLTP/EPA). In real-world conditions, expect 10-20% less.

The DS4 E-Tense 300 4WD is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.

4
· 420i