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840iPetrolvsP7iBEV
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs840i · P7i

BMW 840i Convertible G15 vs Xpeng P7i: 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.

limousine · 2021 vs 2023 · 15,000 km/an · Mixed · Petrol 95 2.17 €/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

ABMW 840i Convertible G15

2,571 €per year

7,9 L/100 km weighted · 17.14 € per 100 km · 1 185 L per year

Gap2,044 € per yearin favour of the P7i (−79 %)≈ 942 L petrol 95
BXpeng P7i

528 €per year

17,6 kWh/100 km weighted · 3.52 € per 100 km · 2 636 kWh per year

The verdict changes with your usage
ProfileSplitAA · 840iBB · P7iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,921 €449 €2,472 € · P7i
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,571 €528 €2,044 € · P7i
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,301 €624 €1,677 € · P7i

Cumulative saving for the P7i

1 year
2,044 €
3 years
6,132 €
5 years
10,220 €
10 years
20,439 €

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

What produces these figures

WLTP combined
7.5 L/100 km · 16.9 kWh/100 km
Powertrain
Combustion · Fully electric
Power
333 ch · 282 ch
Kerb weight
1,840 kg · 2,025 kg

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Frequently asked questions

On a 100 km mixed trip, the Xpeng P7i is about 80% cheaper than the BMW 840i Convertible with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The declared range of the Xpeng P7i is 510 km (WLTP/EPA). In real-world conditions, expect 10-20% less.

The Xpeng P7i is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.