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M4PetrolvsX5Diesel
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  • SpecsM4 · X5

BMW M4 Competition Convertible F82 vs BMW X5 M50d F15: 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 · 2018 vs 2018 · 15,000 km/an · Mixed · Petrol 95 2.17 €/L · 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

ABMW M4 Competition Convertible F82

3,486 €per year

10,7 L/100 km weighted · 23.24 € per 100 km · 1 607 L per year

Gap859 € per yearin favour of the X5 M50d (−25 %)≈ 396 L petrol 95
BBMW X5 M50d F15

2,627 €per year

7,4 L/100 km weighted · 17.51 € per 100 km · 1 105 L per year

The verdict changes with your usage
ProfileSplitAA · M4BB · X5Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway3,911 €2,782 €1,129 € · X5
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway3,486 €2,627 €859 € · X5
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,164 €2,509 €655 € · X5

Cumulative saving for the X5 M50d

1 year
859 €
3 years
2,578 €
5 years
4,297 €
10 years
8,594 €

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

What produces these figures

WLTP combined
10.2 L/100 km · 7.2 L/100 km
Powertrain
Combustion · Combustion
Power
450 ch · 400 ch
Kerb weight
1,790 kg · 2,275 kg

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Frequently asked questions

On a 100 km mixed trip, the BMW X5 M50d is about 25% cheaper than the BMW M4 Competition Convertible with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW X5 M50d is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.