Audi A3 Saloon 2026 running costs in Belgium
Official UK Vehicle Certification Agency (WLTP) figure for the 2026 Audi A3 Saloon: 5.2–5.7 L/100km, 124–136 g/km CO₂. At Belgium prices (€2.21/L diesel), driving 15,000 km a year costs about €1,722 — €0.11 per kilometre.
Official figures — 2026 Audi A3 Saloon
| Fuel types | Diesel · Petrol · Hybrid |
|---|---|
| Official consumption | 5.2–5.7 L/100km |
| CO₂ (official) | 124–136 g/km |
| Engine size | 1,498–1,968 cc |
| Power | 85–110 kW |
| Configurations in source data | 3 |
| Data source | UK Vehicle Certification Agency (WLTP) — WLTP test cycle |
What it costs to run in Belgium
| Diesel (5.2 L/100km) | €1,722/year |
|---|---|
| contrôle technique | €46.00/year |
| Typical annual road tax | €270/year |
| Estimated annual running cost | €2,038/year ≈ €170/month |
Assumes 15,000 km a year and the current average Belgium prices shown above (EU Oil Bulletin (DG ENER) week 31 Aug 2026: E95 €1.885/L). Insurance is not included because it depends on your age, history and the policy — add it in the full ownership calculator. Servicing, tyres and repairs also vary by car and driver.
How it compares with other diesel cars in Belgium
The average diesel car in our Belgium dataset uses 5.6 L/100km. The 2026 Audi A3 Saloon uses 5.2 L/100km — about 7.1% less than that average, or roughly €132 saved a year at 15,000 km.
2026 Audi A3 Saloon — configurations in the official data
| Fuel | Consumption | CO₂ | Engine | Power | Source variant |
|---|---|---|---|---|---|
| Diesel | 5.2 L/100km | 136 g/km | 1968 cc | 110 kW | TDI 150PS · 2 versions (median WLTP) |
| Petrol | 5.7 L/100km | 131 g/km | 1498 cc | 85 kW | TFSI 116 PS 6-speed · 4 versions (median WLTP) |
| Hybrid | 5.4 L/100km | 124 g/km | 1498 cc | 85 kW | TFSI 116 PS S tronic · 4 versions (median WLTP) |
Figures are the official certified values recorded in the UK Vehicle Certification Agency (WLTP), grouped across 3 configurations. Real-world consumption is typically higher than the certified figure.
Related
All Belgium cars · Full Belgium running-cost calculator · Belgium fuel cost calculator
These are estimates built from official certified figures and current average prices. They are not financial advice. Verify the exact figure for the car you are buying — consumption varies by trim, tyres and driving style.