Skip to main content
CaralogyCaralogy
HomeBrandsRoad TripBudgetDuelGuides
Caralogy

The car comparison platform. Physics simulation, road trips, real costs.

Navigation
All brandsCar duelRunning costsMotorwayMethodology
Simulators
Motorway simulatorRunning costsPerformance duel
Brands
VolkswagenBMWMercedesToyotaTeslaAudi
FRENDEESIT
© 2026 Caralogy · All rights reserved
  1. Home
  2. /Consumption
  3. /Sports Cars
420dvs218dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs420d · 218d

BMW 420d Convertible G22 vs BMW 218d xDrive F22: 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.

saloon · 2021 vs 2018 · 15,000 km/an · Mixed · Diesel 2.38 €/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 420d Convertible G22

1,643 €per year

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

Gap228 € per yearin favour of the 420d Convertible (−12 %)≈ 96 L diesel
BBMW 218d xDrive F22

1,871 €per year

5,3 L/100 km weighted · 12.47 € per 100 km · 788 L per year

The verdict changes with your usage
ProfileSplitAA · 420dBB · 218dGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway1,725 €2,031 €307 € · 420d
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway1,643 €1,871 €228 € · 420d
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway1,586 €1,743 €157 € · 420d

Cumulative saving for the 420d Convertible

1 year
228 €
3 years
684 €
5 years
1,140 €
10 years
2,281 €

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

What produces these figures

WLTP combined
4.5 L/100 km · 5.1 L/100 km
Powertrain
Combustion · Combustion
Power
190 ch · 150 ch
Kerb weight
1,775 kg · 1,520 kg

Other similar comparisons

AudiVSBMW

A4 40 TDI vs 420d Convertible

gap 143 €/year
BMWVSAudi

218d xDrive vs A3 Sedan

gap 161 €/year
VolvoVSBMW

S60 B4 vs 420d Convertible

gap 392 €/year
BMWVSAudi

218d xDrive vs A3 Sportback

gap 214 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW 420d Convertible is about 10% cheaper than the BMW 218d xDrive with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

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.