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X3vs318iPetrol
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  • SpecsX3 · 318i

BMW X3 xDrive30i G01 vs BMW 318i G20: 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.

family SUV · 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 X3 xDrive30i G01

2,337 €per year

7,2 L/100 km weighted · 15.58 € per 100 km · 1 077 L per year

Gap407 € per yearin favour of the 318i (−17 %)≈ 188 L petrol 95
BBMW 318i G20

1,930 €per year

5,9 L/100 km weighted · 12.87 € per 100 km · 890 L per year

The verdict changes with your usage
ProfileSplitAA · X3BB · 318iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,497 €2,139 €358 € · 318i
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,337 €1,930 €407 € · 318i
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,213 €1,767 €446 € · 318i

Cumulative saving for the 318i

1 year
407 €
3 years
1,221 €
5 years
2,034 €
10 years
4,069 €

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

What produces these figures

WLTP combined
7.0 L/100 km · 5.7 L/100 km
Powertrain
Combustion · Combustion
Power
252 ch · 156 ch
Kerb weight
1,755 kg · 1,490 kg

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Frequently asked questions

On a 100 km mixed trip, the BMW 318i is about 15% cheaper than the BMW X3 xDrive30i with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW 318i is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.