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S8vsA4 45Petrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsS8 · A4 45

Audi S8 vs Audi A4 45 TFSI quattro: 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 · 2025 vs 2020 · 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

AAudi S8

3,694 €per year

11,3 L/100 km weighted · 24.63 € per 100 km · 1 702 L per year

Gap1,313 € per yearin favour of the A4 45 TFSI quattro (−36 %)≈ 605 L petrol 95
BAudi A4 45 TFSI quattro

2,381 €per year

7,3 L/100 km weighted · 15.87 € per 100 km · 1 097 L per year

The verdict changes with your usage
ProfileSplitAA · S8BB · A4 45Gap
City70 / 25 / 570 % city · 25 % road · 5 % motorway3,780 €2,660 €1,120 € · A4 45
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway3,694 €2,381 €1,313 € · A4 45
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway3,523 €2,165 €1,358 € · A4 45

Cumulative saving for the A4 45 TFSI quattro

1 year
1,313 €
3 years
3,940 €
5 years
6,566 €
10 years
13,133 €

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

What produces these figures

WLTP combined
11.7 L/100 km · 7.0 L/100 km
Powertrain
Combustion · Combustion
Power
571 ch · 245 ch
Kerb weight
2,220 kg · 1,620 kg

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Frequently asked questions

On a 100 km mixed trip, the Audi A4 45 TFSI quattro is about 35% cheaper than the Audi S8 with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

The Audi A4 45 TFSI quattro is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.