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M135ivs218iPetrol
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  • SpecsM135i · 218i

BMW M135i xDrive F40 vs BMW 218i Convertible F44: 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.

compact · 2021 vs 2020 · 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 M135i xDrive F40

2,275 €per year

7,0 L/100 km weighted · 15.17 € per 100 km · 1 049 L per year

Gap264 € per yearin favour of the M135i xDrive (−10 %)≈ 122 L petrol 95
BBMW 218i Convertible F44

2,539 €per year

7,8 L/100 km weighted · 16.93 € per 100 km · 1 170 L per year

The verdict changes with your usage
ProfileSplitAA · M135iBB · 218iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,510 €2,889 €379 € · M135i
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,275 €2,539 €264 € · M135i
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,099 €2,269 €169 € · M135i

Cumulative saving for the M135i xDrive

1 year
264 €
3 years
791 €
5 years
1,318 €
10 years
2,637 €

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

What produces these figures

WLTP combined
6.7 L/100 km · 7.4 L/100 km
Powertrain
Combustion · Combustion
Power
306 ch · 136 ch
Kerb weight
1,525 kg · 1,560 kg

Other similar comparisons

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A3 allstreet vs 218i Convertible

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S3 Sportback vs M135i xDrive

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A3 allstreet vs 218i Convertible

gap 737 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW M135i xDrive is about 10% cheaper than the BMW 218i Convertible with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW M135i xDrive is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.