Audi A6 fuel economy (UK)
Official figures for the Audi A6 from the Vehicle Certification Agency's new car lists, 2000–2026: 755 versions after removing repeats between lists. Economy is in UK (imperial) mpg; electric versions show miles per kWh and range instead. In the most recent lists (2025–2026, WLTP) combined economy is 34.0–55.4 mpg. Electric versions: 3.6–5.0 mi/kWh.
This model has figures from two different official tests: NEDC (older lists) and WLTP. They are shown in separate tables and must not be compared with each other.
Figures by list
| Lists | Test | Versions | Combined |
|---|---|---|---|
| 2025–2026 | WLTP | 43 | 34.0–55.4 mpg · 3.6–5.0 mi/kWh |
| 2016–2018 | NEDC | 165 | 29.4–67.3 mpg |
| 2010–2015 | NEDC | 195 | 25.9–64.2 mpg |
| 2004–2009 | NEDC | 184 | 19.3–53.3 mpg |
| 2000–2003 | NEDC | 168 | 19.5–50.4 mpg |
Ranges are only comparable within the same test. Plug-in hybrids are listed in the tables but left out of these ranges.
WLTP figures, VCA lists 2025–2026
WLTP is the official test for new cars from September 2017. Its figures are closer to real-world driving than the older NEDC figures.
| Version | Fuel | Combined | L/100 km | CO₂ g/km | In lists |
|---|---|---|---|---|---|
| A6 e-tron Avant A6 Avant e-tron | Electric | 3.8 mi/kWh 329 mi range | — | — | 2026 |
| A6 e-tron Avant e-tron performance 270 00 kW | Electric | 3.7 mi/kWh 401 mi range | — | — | 2026 |
| A6 e-tron Avant e-tron quattro 315 00 kW | Electric | 3.6 mi/kWh 386 mi range | — | — | 2026 |
| A6 e-tron Sportback e-tron 210 00 kW | Electric | 4.0 mi/kWh 352 mi range | — | — | 2025–2026 |
| A6 e-tron Sportback e-tron 210 00 kW | Electric | 4.4 mi/kWh 383 mi range | — | — | 2026 |
| A6 e-tron Sportback e-tron performance 270 00 kW | Electric | 4.3 mi/kWh 462 mi range | — | — | 2026 |
| A6 e-tron Sportback e-tron performance 270 00 kW | Electric | 3.9 mi/kWh 424 mi range | — | — | 2026 |
| A6 e-tron Sportback e-tron quattro 315 00 kW | Electric | 3.8 mi/kWh 408 mi range | — | — | 2026 |
| A6 e-tron Sportback e-tron quattro 315 00 kW | Electric | 3.8 mi/kWh 407 mi range | — | — | 2026 |
| A6 Saloon TDI quattro 204PS (C9) · A7 · 1968 cc | Hybrid | 55.4 mpg | 5.1 | 133 | 2025–2026 |
| A6 Avart TDI quattro 204PS (C9) · A7 · 1986 cc | Hybrid | 54.3 mpg | 5.2 | 137 | 2025–2026 |
| A6 Saloon 40 TDI quattro 204PS · A7 · 1968 cc | Hybrid | 50.4 mpg | 5.6 | 148 | 2025–2026 |
| A6 Saloon TDI quattro 204PS (C9) · A7 · 1968 cc | Hybrid | 50.4 mpg | 5.6 | 146 | 2025–2026 |
| A6 Avart TDI quattro 204PS (C9) · A7 · 1986 cc | Hybrid | 49.6 mpg | 5.7 | 150 | 2025–2026 |
| A6 Avart 40 TDI quattro 204PS · A7 · 1986 cc | Hybrid | 48.7 mpg | 5.8 | 152 | 2025–2026 |
| A6 Saloon 40 TDI quattro 204PS · A7 · 1968 cc | Hybrid | 47.1 mpg | 6.0 | 158 | 2025–2026 |
| A6 Avart 40 TDI quattro 204PS · A7 · 1986 cc | Hybrid | 44.8 mpg | 6.3 | 164 | 2025–2026 |
| A6 Saloon 40 TFSI 204PS · A7 · 1984 cc | Hybrid | 38.7 mpg | 7.3 | 165 | 2025–2026 |
| A6 Saloon 45 TFSI quattro 265PS · A7 · 1984 cc | Hybrid | 37.2 mpg | 7.6 | 173 | 2025–2026 |
| A6 Avart 45 TFSI quattro 265PS · A7 · 1984 cc | Hybrid | 36.2 mpg | 7.8 | 178 | 2025–2026 |
| A6 Saloon 40 TFSI 204PS · A7 · 1984 cc | Hybrid | 36.2 mpg | 7.8 | 177 | 2025–2026 |
| A6 Saloon 45 TFSI quattro 265PS · A7 · 1984 cc | Hybrid | 35.3 mpg | 8.0 | 182 | 2025–2026 |
| A6 Avart 45 TFSI quattro 265PS · A7 · 1984 cc | Hybrid | 34.0 mpg | 8.3 | 189 | 2025–2026 |
| A6 Saloon TFSI 204PS (C9) · A7 · 1984 cc | Petrol | 40.4 mpg | 7.0 | 159 | 2025–2026 |
| A6 Avart TFSI 204PS (C9) · A7 · 1984 cc | Petrol | 39.8 mpg | 7.1 | 162 | 2025–2026 |
| A6 Saloon TFSI 204PS (C9) · A7 · 1984 cc | Petrol | 38.2 mpg | 7.4 | 169 | 2025–2026 |
| A6 Avart 40 TFSI 204PS S Tronic · A7 · 1984 cc | Petrol | 37.7 mpg | 7.5 | 171 | 2025–2026 |
| A6 Avart TFSI 204PS (C9) · A7 · 1984 cc | Petrol | 36.7 mpg | 7.7 | 174 | 2025–2026 |
| A6 Avart 40 TFSI 204PS S Tronic · A7 · 1984 cc | Petrol | 34.9 mpg | 8.1 | 184 | 2025–2026 |
| A6 Saloon 50 TFSI e quattro 299PS · A7 · 1984 cc | Plug-in hybrid | 217.3 mpg* 42 mi electric | 1.3 | 29 | 2025–2026 |
| A6 Saloon 50 TFSI e quattro 299PS · A7 · 1984 cc | Plug-in hybrid | 201.8 mpg* 42 mi electric | 1.4 | 32 | 2025–2026 |
| A6 Avart 50 TFSI e quattro 299PS S Tronic · A7 · 1984 cc | Plug-in hybrid | 188.3 mpg* 30 mi electric | 1.5 | 33 | 2025–2026 |
| A6 Saloon e-hybrid quattro 299PS (C9) · A7 · 1984 cc | Plug-in hybrid | 128.4 mpg* 65 mi electric | 2.2 | 49 | 2025–2026 |
| A6 Avart e-hybrid quattro 299PS (C9) · A7 · 1984 cc | Plug-in hybrid | 122.8 mpg* 63 mi electric | 2.3 | 52 | 2025–2026 |
| A6 Saloon e-hybrid quattro 299PS (C9) · A7 · 1984 cc | Plug-in hybrid | 113.0 mpg* 62 mi electric | 2.5 | 58 | 2025–2026 |
| A6 e-tron Avant A6 Avant e-tron | Electric | 4.0 mi/kWh 329 mi range | — | — | 2025 |
| A6 e-tron Avant e-tron performance 270 00 kW | Electric | 4.0 mi/kWh 401 mi range | — | — | 2025 |
| A6 e-tron Avant e-tron quattro 315 00 kW | Electric | 4.0 mi/kWh 386 mi range | — | — | 2025 |
| A6 e-tron Sportback e-tron 210 00 kW | Electric | 5.0 mi/kWh 383 mi range | — | — | 2025 |
| A6 e-tron Sportback e-tron performance 270 00 kW | Electric | 4.0 mi/kWh 462 mi range | — | — | 2025 |
| A6 e-tron Sportback e-tron performance 270 00 kW | Electric | 4.0 mi/kWh 424 mi range | — | — | 2025 |
| A6 e-tron Sportback e-tron quattro 315 00 kW | Electric | 4.0 mi/kWh 408 mi range | — | — | 2025 |
| A6 e-tron Sportback e-tron quattro 315 00 kW | Electric | 4.0 mi/kWh 407 mi range | — | — | 2025 |
* Plug-in hybrids: official weighted combined figure, which assumes the battery is charged regularly. Without charging, economy is much lower.
Using these figures
"In lists" shows which yearly VCA lists include the version; it is not the model year. Manufacturers supply figures to the VCA voluntarily, so some makes are missing from some years' lists (for example several large brands between 2019 and 2024); a gap in the years does not mean the car was not sold. Click an mpg figure to open the trip fuel cost calculator with it in UK units, or convert it with the fuel economy converter. Real-world economy is usually lower than official figures — measure yours with the MPG calculator.
Tyre and wheel sizes for this model: Audi A6 tyre sizes.
Source: Vehicle Certification Agency (VCA), Car Fuel Data — official data download (lists 2000–2026, downloaded 2026-10-22). © Crown copyright, reused under the licence published for this dataset on data.gov.uk (Creative Commons Attribution). Data processed by us (duplicates merged, model names tidied); the VCA is not responsible for our use of it. The VCA states that figures are supplied by manufacturers, may not be achieved in real-world driving, and are used at the user's own risk.