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SHybridvs120dDiesel
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Mercedes S 350 d 4MATIC Limousine Langversion W223 vs BMW 120d F20LCI: 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 · 2026 vs 2018 · 15,000 km/an · Mixed · Diesel 2.38 €/L · 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

Result · yearly energy cost

AMercedes S 350 d 4MATIC Limousine Langversion W223

2,570 €per year

7,2 L/100 km weighted · 17.13 € per 100 km · 1 082 L per year

Gap848 € per yearin favour of the 120d (−33 %)≈ 357 L diesel
BBMW 120d F20LCI

1,721 €per year

4,8 L/100 km weighted · 11.48 € per 100 km · 725 L per year

The verdict changes with your usage
ProfileSplitAA · SBB · 120dGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,871 €1,843 €1,028 € · 120d
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,570 €1,721 €848 € · 120d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,336 €1,629 €707 € · 120d

Cumulative saving for the 120d

1 year
848 €
3 years
2,545 €
5 years
4,242 €
10 years
8,484 €

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

What produces these figures

WLTP combined
6.9 L/100 km · 4.7 L/100 km
Powertrain
Mild hybrid 48 V · Combustion
Power
313 ch · 190 ch
Kerb weight
2,250 kg · 1,415 kg

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BMWVSAudi

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Frequently asked questions

On a 100 km mixed trip, the BMW 120d is about 35% cheaper than the Mercedes S 350 d 4MATIC Limousine Langversion with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW 120d is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.

120d