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RS 5PHEVvs420dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsRS 5 · 420d

Audi RS 5 Sedan vs BMW 420d Convertible G22: which is cheaper to run?

What each kilometre costs, depending on your driving profile, how you charge and the share of the trip driven on electricity or fuel.

saloon · 2026 vs 2021 · 15,000 km/an · Mixed · Petrol 95 2.17 €/L · 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

AAudi RS 5 Sedan

1,714 €per year

19,1 kWh/100 km weighted · 11.43 € per 100 km · 1 568 L per year

Gap71 € per yearin favour of the 420d Convertible (−4 %)≈ 33 L petrol 95
BBMW 420d Convertible G22

1,643 €per year

4,6 L/100 km weighted · 10.95 € per 100 km · 692 L per year

The verdict changes with your usage
ProfileSplitAA · RS 5BB · 420dGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway1,714 €1,725 €Nearly level
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway1,714 €1,643 €71 € · 420d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway1,714 €1,586 €128 € · 420d

Cumulative saving for the 420d Convertible

1 year
71 €
3 years
214 €
5 years
357 €
10 years
714 €

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

What produces these figures

WLTP combined
18.4 kWh/100 km · 4.5 L/100 km
Powertrain
Plug-in hybrid · Combustion
Power
639 ch · 190 ch
Kerb weight
2,355 kg · 1,775 kg

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Frequently asked questions

On a 100 km mixed trip, the Audi RS 5 Sedan and BMW 420d Convertible have a near-identical cost per km with default parameters. The gap becomes significant once you enter your actual energy prices.

The declared range of the Audi RS 5 Sedan is 78 km (WLTP/EPA). In real-world conditions, expect 10-20% less.

The BMW 420d Convertible is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.