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Tesla Model S 85 vs BMW iX xDrive40: 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.

grand tourer · 2012 vs 2021 · 15,000 km/an · Mixed · Home 0.20 €/kWh · Methodology
Annual mileage
15,000 km
5,000 km50,000 km
Driving mix

30 % City · 50 % Road · 20 % Motorway

Charging type

Result · yearly energy cost

ATesla Model S 85

702 €per year

23,4 kWh/100 km weighted · 4.68 € per 100 km · 3 507 kWh per year

Gap37 € per yearin favour of the iX xDrive40 (−5 %)≈ 17 L petrol 95
BBMW iX xDrive40

665 €per year

22,2 kWh/100 km weighted · 4.43 € per 100 km · 3 323 kWh per year

The verdict changes with your usage
ProfileSplitAA · ModelBB · iXGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway682 €566 €116 € · iX
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway702 €665 €37 € · iX
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway719 €786 €67 € · Model

Cumulative saving for the iX xDrive40

1 year
37 €
3 years
110 €
5 years
184 €
10 years
368 €

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

What produces these figures

WLTP combined
23.5 kWh/100 km · 21.3 kWh/100 km
Powertrain
Fully electric · Fully electric
Power
362 ch · 326 ch
Kerb weight
2,108 kg · 2,440 kg

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Frequently asked questions

On a 100 km mixed trip, the Tesla Model S 85 and BMW iX xDrive40 have a near-identical cost per km with default parameters. The gap becomes significant once you enter your actual energy prices.

Tesla Model S 85 offers more range: 426 km vs 425 km for BMW iX xDrive40 (WLTP/EPA). In real motorway use, expect 10-20% less depending on temperature.

The BMW iX xDrive40 is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.