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M135ivs128tiPetrol
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  • SpecsM135i · 128ti

BMW M135i xDrive F40 vs BMW 128ti F40: 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 · 2019 vs 2021 · 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

2,347 €per year

7,2 L/100 km weighted · 15.65 € per 100 km · 1 082 L per year

Gap182 € per yearin favour of the 128ti (−8 %)≈ 84 L petrol 95
BBMW 128ti F40

2,165 €per year

6,7 L/100 km weighted · 14.43 € per 100 km · 998 L per year

The verdict changes with your usage
ProfileSplitAA · M135iBB · 128tiGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,544 €2,368 €176 € · 128ti
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,347 €2,165 €182 € · 128ti
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,168 €2,012 €156 € · 128ti

Cumulative saving for the 128ti

1 year
182 €
3 years
547 €
5 years
911 €
10 years
1,823 €

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

What produces these figures

WLTP combined
7.1 L/100 km · 6.4 L/100 km
Powertrain
Combustion · Combustion
Power
306 ch · 265 ch
Kerb weight
1,525 kg · 1,445 kg

Other similar comparisons

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gap 144 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW 128ti is about 10% cheaper than the BMW M135i xDrive with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW 128ti is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.