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Megane 4vs125iPetrol
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  • SpecsMegane 4 · 125i

Renault Megane 4 RS 280 vs BMW 125i F20LCI: 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.

compact · 2018 vs 2018 · 15,000 km/an · Mixed · Petrol 95 2.17 €/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

ARenault Megane 4 RS 280

2,755 €per year

8,5 L/100 km weighted · 18.37 € per 100 km · 1 270 L per year

Gap636 € per yearin favour of the 125i (−23 %)≈ 293 L petrol 95
BBMW 125i F20LCI

2,119 €per year

6,5 L/100 km weighted · 14.13 € per 100 km · 977 L per year

The verdict changes with your usage
ProfileSplitAA · Megane 4BB · 125iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway3,078 €2,292 €787 € · 125i
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,755 €2,119 €636 € · 125i
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,505 €1,989 €516 € · 125i

Cumulative saving for the 125i

1 year
636 €
3 years
1,909 €
5 years
3,181 €
10 years
6,362 €

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

What produces these figures

WLTP combined
8.1 L/100 km · 6.3 L/100 km
Powertrain
Combustion · Combustion
Power
280 ch · 224 ch
Kerb weight
1,450 kg · 1,400 kg

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BMWVSAudi

125i vs A3 Sedan

gap 205 €/year

Frequently asked questions

On a 100 km mixed trip, the BMW 125i is about 25% cheaper than the Renault Megane 4 RS 280 with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The BMW 125i is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.