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ModelBEVvs840dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost

Tesla Model S Performance vs BMW 840d xDrive Convertible G15: 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 · 2019 vs 2021 · 15,000 km/an · Mixed · Diesel 2.38 €/L · Home 0.20 €/kWh · 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
Charging type

Result · yearly energy cost

ATesla Model S Performance

591 €per year

19,7 kWh/100 km weighted · 3.94 € per 100 km · 2 952 kWh per year

Gap1,651 € per yearin favour of the Model S Performance (−74 %)≈ 695 L diesel
BBMW 840d xDrive Convertible G15

2,242 €per year

6,3 L/100 km weighted · 14.95 € per 100 km · 944 L per year

The verdict changes with your usage
ProfileSplitAA · ModelBB · 840dGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway591 €2,498 €1,908 € · Model
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway591 €2,242 €1,651 € · Model
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway599 €2,049 €1,450 € · Model

Cumulative saving for the Model S Performance

1 year
1,651 €
3 years
4,953 €
5 years
8,255 €
10 years
16,510 €

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

What produces these figures

WLTP combined
19.3 kWh/100 km · 6.0 L/100 km
Powertrain
Fully electric · Combustion
Power
778 ch · 340 ch
Kerb weight
2,250 kg · 2,030 kg

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gap 562 €/year
TeslaVSPorsche

Model S Performance vs Taycan Turbo S Cross Turismo

gap 218 €/year
AudiVSBMW

A8 55 TFSI quattro tiptronic 250 kW MHEV vs 840d xDrive Convertible

gap 1 349 €/year

Frequently asked questions

On a 100 km mixed trip, the Tesla Model S Performance is about 75% cheaper than the BMW 840d xDrive Convertible with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The declared range of the Tesla Model S Performance is 593 km (WLTP/EPA). In real-world conditions, expect 10-20% less.

The Tesla Model S Performance is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.

  • SpecsModel · 840d