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TT 45vs420iPetrol
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  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsTT 45 · 420i

Audi TT 45 TFSI vs BMW 420i xDrive G22: 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.

sports car · 2019 vs 2021 · 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 TT 45 TFSI

2,211 €per year

6,8 L/100 km weighted · 14.74 € per 100 km · 1 019 L per year

Gap340 € per yearin favour of the TT 45 TFSI (−13 %)≈ 157 L petrol 95
BBMW 420i xDrive G22

2,551 €per year

7,8 L/100 km weighted · 17.01 € per 100 km · 1 176 L per year

The verdict changes with your usage
ProfileSplitAA · TT 45BB · 420iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,470 €2,850 €380 € · TT 45
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,211 €2,551 €340 € · TT 45
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,010 €2,319 €309 € · TT 45

Cumulative saving for the TT 45 TFSI

1 year
340 €
3 years
1,020 €
5 years
1,701 €
10 years
3,401 €

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

What produces these figures

WLTP combined
6.5 L/100 km · 7.5 L/100 km
Powertrain
Combustion · Combustion
Power
245 ch · 184 ch
Kerb weight
1,330 kg · 1,590 kg

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A5 Avant vs 420i xDrive

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Frequently asked questions

On a 100 km mixed trip, the Audi TT 45 TFSI is about 15% cheaper than the BMW 420i xDrive with default parameters. This ratio shifts with your actual energy prices - simulate for your profile.

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