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  • Specs330i · C

BMW 330i G20 vs Mercedes C 300 W206: 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.

saloon · 2019 vs 2022 · 15,000 km/an · Mixed · Petrol 95 2.17 €/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

ABMW 330i G20

2,083 €per year

6,4 L/100 km weighted · 13.89 € per 100 km · 960 L per year

Gap400 € per yearin favour of the 330i (−16 %)≈ 184 L petrol 95
BMercedes C 300 W206

2,483 €per year

7,6 L/100 km weighted · 16.55 € per 100 km · 1 144 L per year

The verdict changes with your usage
ProfileSplitAA · 330iBB · CGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,335 €2,774 €439 € · 330i
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,083 €2,483 €400 € · 330i
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway1,891 €2,257 €366 € · 330i

Cumulative saving for the 330i

1 year
400 €
3 years
1,200 €
5 years
1,999 €
10 years
3,999 €

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

What produces these figures

WLTP combined
6.1 L/100 km · 7.3 L/100 km
Powertrain
Combustion · Combustion
Power
258 ch · 258 ch
Kerb weight
1,470 kg · 1,640 kg

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Frequently asked questions

On a 100 km mixed trip, the BMW 330i is about 15% cheaper than the Mercedes C 300 with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW 330i is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.